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CVE-2026-20629VulnerabilityPublished Updated

CVE-2026-20629: Apple macOS · An app may be able to access user-sensitive data

Affects Apple macOSSource CVE Database V5

0

Not known to be exploited · CVSS 5.5 Medium : upgrade to 26.3 when convenient.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 3.1 base score
5.5Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 3% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 26.3
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 11 Feb 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.

What to do

Upgrade Apple macOS to 26.3.

Affected software

ProductAffectedFixed in
ApplemacOSAffected
  • <26.3
Fixed in
  • 26.3

AI-suggested

To mitigate CVE-2026-20629, organizations should: 1) Immediately update all macOS devices to macOS Tahoe 26.3 or later, where the vulnerability is fixed. 2) Enforce strict application installation policies, allowing only trusted and vetted apps to reduce the risk of malicious apps exploiting this flaw. 3) Educate users about the risks of installing untrusted software and the importance of avoiding suspicious prompts requiring interaction. 4) Implement endpoint protection solutions capable of detecting anomalous local app behaviors that attempt to access sensitive files or temporary directories. 5) Use macOS security features such as System Integrity Protection (SIP) and sandboxing to limit app capabilities. 6) Regularly audit and monitor file system access logs to detect unusual access patterns to temporary files. 7) Employ data loss prevention (DLP) tools to monitor and control sensitive data exposure on endpoints. These targeted measures go beyond generic patching by focusing on reducing attack surface and early detection of exploitation attempts.

Description

A privacy issue was addressed with improved handling of temporary files. This issue is fixed in macOS Tahoe 26.3. An app may be able to access user-sensitive data.

References

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