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CVE-2024-27837VulnerabilityPublished Updated

CVE-2024-27837: Apple macOS · A local attacker may gain access to Keychain items

Affects Apple macOSSource CVE Database V5

0

Not known to be exploited · CVSS 7.7 High.

Data as of 26 Oct 2026, 08:30 UTC

CVSS 3.1 base score
7.7High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 13 May 2024

  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 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Apple macOSAffected
  • =0
Fixed in–

AI-suggested

Apple has released an official fix for this vulnerability in macOS Sonoma 14.5. Users and administrators should apply this update promptly to remediate the issue. The vendor advisory confirms the issue is addressed by additional code-signing restrictions in the update. No further mitigation steps are required beyond applying the official patch.

Description

CVE-2024-27837 is a vulnerability in Apple macOS Sonoma that allows a local attacker to gain access to Keychain items due to a downgrade issue. This issue was addressed by Apple with additional code-signing restrictions in macOS Sonoma 14.5, released on May 13, 2024. The vulnerability has a CVSS score of 7.7, indicating high severity, and does not require user interaction or privileges to exploit beyond local access. The fix is officially available in macOS Sonoma 14.5.

References

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