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Firefox Feature Gets Special Mention In TIME's Best Inventions of 2025
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Chrome 141 and Firefox 143 Patches Fix High-Severity Vulnerabilities
High-severity flaws were patched in Chromeβs WebGPU and Video components, and in Firefoxβs Graphics and JavaScript Engine components.
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Firefox Will Offer Visual Searching on Images With AI-Powered Google Lens
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Firefox Ending 32-bit Linux Support Next Year
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Firefox 142's Link Previews Have a New Option: AI-Generated Summaries
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Patch Tuesday, June 2025 Edition
Microsoft today released security updates to fix at least 67 vulnerabilities in its Windows operating systems and software. Redmond warns that one of the flaws is already under active attack, and that software blueprints showing how to exploit a pervasive Windows bug patched this month are now public.
The sole zero-day flaw this month is CVE-2025-33053, a remote code execution flaw in the Windows implementation of WebDAV β an HTTP extension that lets users remotely manage files and directories on a server. While WebDAV isnβt enabled by default in Windows, its presence in legacy or specialized systems still makes it a relevant target, said Seth Hoyt, senior security engineer at Automox.
Adam Barnett, lead software engineer at Rapid7, said Microsoftβs advisory for CVE-2025-33053 does not mention that the Windows implementation of WebDAV is listed as deprecated since November 2023, which in practical terms means that the WebClient service no longer starts by default.
βThe advisory also has attack complexity as low, which means that exploitation does not require preparation of the target environment in any way that is beyond the attackerβs control,β Barnett said. βExploitation relies on the user clicking a malicious link. Itβs not clear how an asset would be immediately vulnerable if the service isnβt running, but all versions of Windows receive a patch, including those released since the deprecation of WebClient, like Server 2025 and Windows 11 24H2.β
Microsoft warns that an βelevation of privilegeβ vulnerability in the Windows Server Message Block (SMB) client (CVE-2025-33073) is likely to be exploited, given that proof-of-concept code for this bug is now public. CVE-2025-33073 has a CVSS risk score of 8.8 (out of 10), and exploitation of the flaw leads to the attacker gaining βSYSTEMβ level control over a vulnerable PC.
βWhat makes this especially dangerous is that no further user interaction is required after the initial connectionβsomething attackers can often trigger without the user realizing it,β said Alex Vovk, co-founder and CEO of Action1. βGiven the high privilege level and ease of exploitation, this flaw poses a significant risk to Windows environments. The scope of affected systems is extensive, as SMB is a core Windows protocol used for file and printer sharing and inter-process communication.β
Beyond these highlights, 10 of the vulnerabilities fixed this month were rated βcriticalβ by Microsoft, including eight remote code execution flaws.
Notably absent from this monthβs patch batch is a fix for a newly discovered weakness in Windows Server 2025 that allows attackers to act with the privileges of any user in Active Directory. The bug, dubbed βBadSuccessor,β was publicly disclosed by researchers at Akamai on May 21, and several public proof-of-concepts are now available. Tenableβs Satnam Narang said organizations that have at least one Windows Server 2025 domain controller should review permissions for principals and limit those permissions as much as possible.
Adobe has released updates for Acrobat Reader and six other products addressing at least 259 vulnerabilities, most of them in an update for Experience Manager. Mozilla Firefox and Google Chrome both recently released security updates that require a restart of the browser to take effect. The latest Chrome update fixes two zero-day exploits in the browser (CVE-2025-5419 and CVE-2025-4664).
For a detailed breakdown on the individual security updates released by Microsoft today, check out theΒ Patch Tuesday roundup from the SANS Internet Storm Center. Action 1 has a breakdown of patches from Microsoft and a raft of other software vendors releasing fixes this month. As always, please back up your system and/or data before patching, and feel free to drop a note in the comments if you run into any problems applying these updates.
Russian APT Chained Firefox and Windows Zero-Days Against US and European Targets
Towards a Quieter Firefox
Brian King // On a recent webapp test, I got a little frustrated with all the extra HTTP requests showing up in my Burpsuite Proxy History from connections that Firefox [β¦]
The post Towards a Quieter Firefox appeared first on Black Hills Information Security, Inc..