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Apple Patches Record 261 Vulnerabilities in Latest OS Updates

Apple Patches Record 261 Vulnerabilities in Latest OS Updates

First seen 14 Sep 2026, 20:56 UTC

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ThreatCluster AI
ThreatCluster September 14, 2026 at 22:23 UTC
  • Apple's latest updates fixed a record 261 vulnerabilities across its operating systems.
  • iOS 27 addresses 122 vulnerabilities, while macOS 27 includes 204 fixes.
  • No vulnerabilities were reported as actively exploited at the time of the updates.

On September 14, 2026, Apple released updates for iOS 27 and macOS 27, addressing a total of 261 vulnerabilities, the highest number ever patched in a single release. iOS 27 alone fixed 122 vulnerabilities, while macOS 27 included 204 fixes. Notably, 75 of the vulnerabilities were shared between iOS 27 and the concurrent iOS 26.7 update, which also fixed over 80 issues. The vulnerabilities include critical kernel flaws that could allow remote code execution and unauthorized access. Despite the large number of patches, none of the vulnerabilities were reported as actively exploited. The updates were influenced by advancements in AI coding tools that have improved vulnerability detection. Users have reported issues with downloading iOS 27, with some seeing iOS 26.7 instead. Security-relevant applications also require updates for compatibility with macOS 27. The updates reflect an ongoing trend of increasing vulnerability disclosures as AI tools become more prevalent in security research.

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Timeline

2026-09-14
Apple releases iOS 27 and macOS 27 updates
Apple patched a total of 261 vulnerabilities, marking the highest number ever in a single release.
Isc.Sans.Edu
2026-09-14
iOS 27 fixes 122 vulnerabilities
The update includes critical kernel flaws that could allow remote code execution and unauthorized access.
Macrumors
2026-09-14
Users report download issues
Some users experienced difficulties downloading iOS 27, seeing iOS 26.7 instead, though the update may still be installed.
Isc.Sans.Edu

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