Patch Tuesday – September 2025


Microsoft is addressing 176 vulnerabilities today, which seems like a lot, and it is. Curiously, Microsoft’s own Security Update Guide (SUG) for September 2025 Patch Tuesday only lists 86 vulns, and that’s because the SUG doesn’t include a large number of open source software (OSS) fixes published today as part of updates for Azure Linux and CLB Mariner.

Microsoft is aware of public disclosure for just two of the vulnerabilities published today, and claims no evidence of in-the-wild exploitation. Yet again, there are zero-day vulnerabilities patched, but none of them evaluate as critical severity. Today’s release includes the publication of five critical remote code execution (RCE) vulnerabilities, although Microsoft expects that none of these are particularly likely to see exploitation. Five browser vulnerabilities have already been published separately this month, and are not included in the total.

Read more…
Source: Rapid7


Sign up for the Cyber Security Review Newsletter
The latest cyber security news and insights delivered right to your inbox


Related:

  • Sophos fixes critical firewall hole exploited by miscreants

    September 28, 2022

    A critical code-injection vulnerability in Sophos Firewall has been fixed — but not before miscreants found and exploited the bug. The flaw, tracked as CVE-2022-3236, exists in the User Portal and Webadmin components of the firewall in versions 19.0 and older. While it hasn’t been issued a CVSS severity score, Sophos deemed it “critical” and noted ...

  • Microsoft Releases Out-of-Band Security Update for Microsoft Endpoint Configuration Manager

    September 21, 2022

    Microsoft has released a security update to address a vulnerability in Microsoft Endpoint Configuration Manager, versions 2103-2207. An attacker could exploit this vulnerability to obtain sensitive information. The Cybersecurity and Infrastructure Security Agency (CISA) encourages users and administrators to review Microsoft’s Security Advisory for CVE-2022-37972 and apply the necessary updates. Read more… Source: U.S. Cybersecurity and Infrastructure Security ...

  • Google Chrome emergency update fixes new zero-day used in attacks

    September 2, 2022

    Google has released Chrome 105.0.5195.102 for Windows, Mac, and Linux users to address a single high-severity security flaw, the sixth Chrome zero-day exploited in attacks patched this year. “Google is aware of reports that an exploit for CVE-2022-3075 exists in the wild,” the company said in a security advisory published on Friday. This new version is rolling ...

  • Apple backports fix for actively exploited iOS zero-day to older iPhones

    August 31, 2022

    Apple has released new security updates to backport patches released earlier this month to older iPhones and iPads addressing a remotely exploitable WebKit zero-day that allows attackers to execute arbitrary code on unpatched devices. This zero-day vulnerability is the same one Apple patched for macOS Monterey and iPhone/iPad devices on August 17, and for Safari on ...

  • Apple releases Safari 15.6.1 to fix zero-day bug used in attacks

    August 18, 2022

    Apple has released Safari 15.6.1 for macOS Big Sur and Catalina to fix a zero-day vulnerability exploited in the wild to hack Macs. The zero-day patched today (CVE-2022-32893) is an out-of-bounds write issue in WebKit that could allow a threat actor to execute code remotely on a vulnerable device. “Processing maliciously crafted web content may lead to ...

  • Apple security updates fix 2 zero-days used to hack iPhones, Macs

    August 17, 2022

    Apple has released emergency security updates today to fix two zero-day vulnerabilities previously exploited by attackers to hack iPhones, iPads, or Macs. Zero-day vulnerabilities are security flaws known by attackers or researchers before the software vendor has become aware or been able to patch them. In many cases, zero-days have public proof-of-concept exploits or are actively ...