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.
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Source: Rapid7
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