Alarm bells ratcheted up yet again about an AI-discovered vulnerability that could — if exploited in the wild — destabilize vast stretches of the internet. 

The critical defect — CVE-2026-111497 — affects the Google-developed Brotli decompression library that’s bundled into many components, applications and cloud services riding on open-source software. The buffer overflow vulnerability, which OpenAI Codex Security discovered and Node.js disclosed in a Oct. 21 security advisory, can trigger system crashes and remote code execution. 

Researchers haven’t observed any active exploitation of the defect in real networks, but concerns are mounting. Multiple vendors and software packages, including Microsoft and Python, that rely on vulnerable versions of Brotli have rushed emergency patches out to address the risk of exploitation in their respective systems.

Wiz researchers warned that “91% of cloud environments have resources vulnerable to CVE-2026-111497 and 82% of cloud environments have publicly exposed Node.js instances.”

The attack surface is “extremely broad and vast, but much of the impact of exploitation depends entirely on its implementation and how it is used within that piece of software,” said Jake Knott, head of threat intelligence at watchTowr.

Christiaan Beek, vice president at Rapid7 Intelligence, said the Brotli vulnerability is especially concerning because it’s effectively hiding out in the open, as are many open-source software libraries.

“Most businesses have no idea how deeply components like Brotli are embedded in their technology. A vulnerability in a compression library sounds almost boring until you realize it could affect applications your business depends on every day,” he said. “That’s the uncomfortable reality of modern software: a small component can create a very large business risk.”

The defect, dubbed “Node2Shell” or “Broccoli2Shell,” is the latest in a series of vulnerabilities that have provoked an emergency response. Defenders and researchers were on heightened alert last week over a pair of critical PHP vulnerabilities dubbed “PHP2Shell” that also have yet to be exploited in the wild as of Monday afternoon.

These cyclical and increasingly recurring so-called emergencies are putting organizations and defenders at a significant disadvantage. 

“After being part of numerous channels and message threads full of defenders trying to discern what’s real and what’s BS over the past several months — and especially the past week — I can say unequivocally that the human cost of these events is real, pronounced, and will have downstream impacts far beyond what the community can immediately predict,” Caitlin Condon, vice president of research at VulnCheck, told CyberScoop.

“None of this — high-profile vulnerability disclosures, the overblown exploitability assumptions, the community arguments, the race to weaponize — is new,” she added. 

“What’s changed now is that AI is pumping out complex — and often not clearly explained — finds at a much higher rate, exponentially increasing noise levels and making it much more difficult both to debunk overhyped vulnerability discoveries and to determine which vulnerabilities are broadly exploitable in real-world production configurations.” 

Researchers acknowledge the additional stress defenders and organizations are in because of this always-in-emergency mode.

“We’ve reached a point where everything seems to be an emergency. And when everything is critical, businesses risk losing sight of what actually matters,” Beek said. “The real cost isn’t just patching. It’s the constant disruption to operations, the diversion of resources, and the difficult decisions about which business systems deserve immediate attention.”

Experts also consider this the new normal as more high-impact vulnerabilities with far-reaching potential consequences are found. 

“We suspect in the very near future, defenders may lose the ability to tell what is a true emergency versus a loud and prevalent vulnerability in a ubiquitous product or library,” Knott said. 

Experts advise organizations to focus on their specific risk, weighing the Brotli vulnerability’s potential impact in their environment. 

“Attackers don’t care about CVSS scores,” Beek said. “They care about what they can compromise, disrupt, or monetize and that’s exactly how we should prioritize our defenses.”

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Former National Security Agency Director Paul Nakasone said a reported broad reorganization of the agency is “probably necessary” as it confronts faster-moving cyberthreats, artificial intelligence and competition with China, but he cautioned that the outcome will depend on how the changes are carried out.

Speaking Tuesday at VulnCheck’s ThreatCon1 conference, Nakasone addressed a recent report that the NSA is undergoing a major restructuring centered in part on artificial intelligence and China. According to a report last month from the Washington Post, the agency is creating five new organizations focused on artificial intelligence, China, cybersecurity, combat support, and global intelligence, with each led by a newly elevated “mission director.”

Nakasone, who led the NSA and U.S. Cyber Command from 2018 to 2024, said he found it encouraging that agency leaders recognized the need to adapt. 

“I think that the world has changed so dramatically, so it’s hard to imagine [the NSA] not changing,” he said.

But he said large-scale institutional changes can take time, especially in an agency with broad intelligence, cyber and military responsibilities. 

“When you’re a big bureaucrat, how effective is that change? I think it depends,” Nakasone said. “It’s not necessarily the change, because I think that’s a good thing. I think it’s how you implement the change.”

Nakasone’s comments reflected a central tension in the current national security environment: Intelligence agencies are under pressure to reorganize around emerging technologies, particularly balancing the need to keep the United States as a leader in AI, while also defending against adversaries like China that will look to use the technology for their own strategic goals. 

He specifically highlighted how AI has sharply reduced the time defenders have to detect and respond to cyber intrusions. When he assumed command in 2018, he said, CrowdStrike data showed that an adversary took hours to move laterally through a system after an initial intrusion. As of 2025, that dwell time has dropped to an average of 29 minutes. 

“Remember the old mantra, we’d say, ‘Hey, we have one minute to be able to recognize something has happened, 10 minutes to figure out what we’re going to do, and 60 minutes to really enact it,” Nakasone said. “We’re well past that, and this is the challenge that we have as we think about our opportunities to have better defense in the future.”

That attack timeline is particularly significant as organizations are figuring out how AI can be used to defend their networks and systems. Nakasone, who sits on the board of OpenAI, said defenders have a temporary advantage, which he called a “defender’s window,” before adversaries fully exploit AI’s capacity against critical infrastructure and sensitive organizations.

“I think there’s a defender’s window right now within AI that really our adversaries haven’t caught up and used the capacity that really could be utilized against our critical infrastructure and most sensitive organizations,” he said.

The ability to adapt also depends on personnel, Nakasone said, pointing to agencies competing with private companies for technical talent. Citing figures for the government’s national security workforce, he said the average age is 47, with half the workforce older than 50, 10% younger than 30 and 13.5% could retire immediately.

DefenseScoop reported last week that federal employees in cybersecurity roles could face significant pay cuts.

“I think our government has to create the atmosphere that wants to make sure that people see that their work for the government is valued,” Nakasone said. “I think that there’s probably no one in this room that wouldn’t say that we can be more efficient in our government, but I also think there are a lot of people in this room that have had [their] government service attacked to say, ‘That’s just for people that can’t get jobs on the outside.’ That’s not right. I think there’s a way that we can talk much more effectively about our service and our work in our government.”

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The Cybersecurity and Infrastructure Security Agency published a paper Wednesday that lays out its plan for improving the Common Vulnerabilities and Exposures (CVE) program, a contract for which nearly ended last year before a last-minute reprieve.

The white paper outlines the components of a “Quality Era” for the program, widely used as the definitive clearinghouse for data on vulnerabilities in software and other products, even as the number of CVEs surges. 

“CISA remains committed to leading, growing and sustaining the CVE Program into the foreseeable future, just as we’ve done for more than 25 years without fail,” said Chris Butera, acting executive assistant director for cybersecurity. “Informed by CVE community feedback, this whitepaper communicates CISA’s effort to support and enable stronger participation and governance, a program-wide maturation effort.”

The CVE program has been in a “Growth Era,” according to CISA. Over 67,000 new CVEs have been published in 2026 as of last week, and the National Institute of Standards and Technology National Vulnerability Database program has seen a 263% increase in CVE submissions between 2020 and 2025. Artificial intelligence has furthered the rise.

“These pressures intensify quality challenges across the CVE ecosystem,” the white paper states. “While faster discovery and reporting can improve the value of vulnerability information when records are complete, consistent, timely, and actionable, the same acceleration can expose gaps in processes, tooling, coordination, and accountability — especially when the quality of the submissions is uneven.” 

The plan calls for advancing data quality across four key dimensions: transparent and effective program governance, broad and active participation across the global software community, data infrastructure that supports CVE operational functions and reliable CVE record content.

Some vulnerability experts have questioned whether other organizations should take over CISA’s stewardship, given budget cuts at the agency.

Butera invited further feedback from the CVE community on the white paper, which stems from an earlier strategy document on the future of the program.

Some CVE experts that CyberScoop spoke to were supportive of what CISA wants to achieve, but skeptical about elements of the white paper.

“We’ve been working around long-standing quality issues in CVE reports for decades. Incomplete or inconsistent records create real downstream work for the security tools, developers, and organizations trying to determine whether they’re actually affected and what to do next,” said Sonatype’s co-founder and chief technology officer Brian Fox. “So it’s good to see CISA acknowledge that quality has to extend beyond the record itself to governance, infrastructure, and participation across the ecosystem.”

But, he added, “I’ll believe we’ve entered a ‘Quality Era’ when we can see the improvement in the actual data and in the decisions that data enables.”

Tom Alrich, who leads the OWASP PURL Expansion Working Group that’s focused on establishing a protocol for creating Product URLs for commercial software, said CISA’s white paper ignores a particularly important and growing issue.

“I support everything mentioned. I also support the flag, motherhood and apple pie,” he said. “However, nothing in there is going to affect the CVE program’s most important problem: that a huge and growing percentage of new CVE records don’t contain a machine-readable software identifier.”

Caitlin Condon, VulnCheck’s vice president of security research, said that “CISA and the CVE program are well-positioned to both observe challenges in this space and to create (and enforce) standards that explicitly state what ‘quality’ means in CVE records.”

But she said the white paper was more the basis for a future framework than a full-fledged framework in itself.

“Many of the potential success metrics suggested in the document can be measured today, but simply aren’t shared publicly,” Condon said. “In future iterations on the framework, I’d hope to see more transparency on CVE metrics as they stand today, along with reasoning on why those metrics are the right ones (versus simply the things that are easiest to measure qualitatively or quantitatively).”

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AI systems like Anthropic’s Project Glasswing and Microsoft’s MDASH are aiding in the discovery of vulnerabilities, filling the ever-growing pool of defects that defenders have to address before exploitation occurs. Yet, through the first half of 2026, these vulnerabilities were no more or less likely to be exploited than all vulnerabilities disclosed during that period, VulnCheck said in a report Tuesday. 

Concerns remain high about AI-discovered vulnerabilities fueling more attacks, but VulnCheck’s review of exploitation data shows that those fears are unfounded, at least so far. 

Patrick Garrity, security researcher at VulnCheck and report author, identified 1,061 vulnerabilities attributed to AI-assisted discovery during the first six months of the year. Of those vulnerabilities discovered by AI, 14 ( 1.3%) were exploited in the wild, a breakdown that aligns with the exploitation rate researchers observed across all vulnerabilities during the same period. 

“While AI-assisted vulnerability discovery clearly has value for both attackers and defenders, the data does not suggest that AI discovered vulnerabilities are inherently more likely to be exploited than those found through traditional methods,” Garrity wrote.

While AI’s contribution to actively exploited vulnerabilities was muted in the first half of the year, it’s too soon to assume that trend will continue. Moreover, none of these major vulnerability-hunting models were running for that full period. Project Glasswing rolled out in April, while Microsoft’s MDASH and OpenAI’s Daybreak were both unveiled in May.

The upward trend in Microsoft’s monthly Patch Tuesday indicates how much the floodgates might open through the remainder of the year as AI models discover more vulnerabilities. The company’s July security update contained an all-time-record of 622 vulnerabilities, besting the previous record-breaking June update with 206 vulnerabilities.

VulnCheck’s state of exploitation report also found that vulnerabilities were exploited much faster after CVE publication, speeding up from an average of 120 days in 2025 to 80 days during the first half of the year.

The intelligence firm also determined which technology categories were actively exploited most often. Content management systems accounted for nearly one-third of the 495 known exploited vulnerabilities VulnCheck identified during the first half of 2026. Network edge devices were responsible for almost 14%, followed by operating systems at nearly 9%, server software at 8%, and AI products — an emerging attack surface — at almost 6%.

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SonicWall customers are attempting to dodge another security challenge as attackers are exploiting a pair of zero-day vulnerabilities that have been confirmed by the vendor. 

The company publicly disclosed the vulnerabilities — CVE-2026-15409 and CVE-2026-15410 — in a security advisory Tuesday. SonicWall credited an employee with discovering the defects, but it hasn’t said when the discovery occurred or the earliest known instance of exploitation. 

Rapid7 researchers told CyberScoop both vulnerabilities were first exploited June 22. “From the cases that our team has observed, the goal is likely ransomware, though we have prevented the actors from achieving exfiltration and encryption,” said Seth Lazarus, senior manager of detection and response services at Rapid7.

Overlapping tactics, techniques and procedures from the attacks observed by Rapid7 indicate the same threat group or attacker discovered and exploited the zero-days, Lazarus added.

SonicWall did not answer questions about the impacts of these attacks thus far, and the company hasn’t attributed the attacks to a known group or described the attacker’s origins and motivations.

The vendor did, however, confirm to CyberScoop that both vulnerabilities have been chained together for exploitation. The vulnerabilities affecting SonicWall SMA1000 appliances, including a max-severity defect that allows attackers to make authenticated requests and a 7.2-rated vulnerability that allows authenticated command injection.

“When these two are chained, an attacker can go from zero access to a complete system compromise for the affected appliance,” said Landon Rice, senior exploit developer at VulnCheck.

Ben Harris, founder and CEO at watchTowr, said two characteristics of the vulnerabilities fuel a sense of dread. “Both were exploited as zero-days before fixes were available, and together they offer a plausible path to remote-code execution from the internet,” he said.

The Cybersecurity and Infrastructure Security Agency added both zero-days to its known exploited vulnerabilities catalog Tuesday. 

SonicWall encouraged customers to patch the vulnerabilities by upgrading to the latest software version, which it released upon disclosure, and shared some indicators of compromise to help customers hunt for potential malicious activity on their systems.

“Speed of response was a priority for us,” said Bret Fitzgerald, senior director of global communications at SonicWall. “Within days of becoming aware of the issue, our team had developed a script that we can run on behalf of affected customers to assist with resolution, and mitigation efforts are already underway.”

SonicWall and third-party researchers haven’t said how many SonicWall customers are impacted by the exploited vulnerabilities, but the vendor did say it already investigated multiple cases of active exploitation. 

Fitzgerald said the company monitors about one million sensors globally and “SMA1000 appliances represent a very small subset of that footprint, less than 5,000 units.”

SonicWall said support staff are also helping customers work through instances of suspicious activity, warning that patching alone is not sufficient. 

The vendor and its customers have been hit by a barrage of actively exploited zero-days and previously disclosed defects in SonicWall devices for years. In 2025, an undisclosed state-sponsored threat actor intruded the company’s cloud environment and stole firewall configurations of every SonicWall customer. 

Seventeen defects affecting the vendor’s products have been added to CISA’s known exploited vulnerabilities catalog since late 2021. Ten of those defects are known to be used in ransomware campaigns, according to CISA, including a wave of about 40 Akira ransomware attacks between mid-July and early August.

“As always,” Harris said, “when something is confirmed as already exploited in the wild, patching is the bare minimum, and breach should be assumed.”

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