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VulnerabilityPublished Updated

CVE-2026-65413: Apple macOS · Integer Overflow

Affects Apple macOSSource CVE Database V5

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Not known to be exploited · CVSS 5.5 Medium · fixed in 27 : update Apple macOS when convenient.

Data as of 30 Oct 2026, 06:59 UTC

CVSS 3.1 base score
5.5Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CISA-ADPCVSS 3.15.5
EPSS
0.1% chance of exploitation in 30 days – higher than 5% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 27, 26.7, 15.8
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 14 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: 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 29 Oct 2026.

What to do

Upgrade Apple macOS to 27, 26.7 or 15.8.

Affected software

ProductAffectedFixed in
ApplemacOSAffected
  • <27
Fixed in
  • 27
ApplemacOSAffected
  • <26.7
Fixed in
  • 26.7
ApplemacOSAffected
  • <15.8
Fixed in
  • 15.8

AI-suggested

Apply the official fixes by upgrading to macOS Golden Gate 27, macOS Sequoia 15.8, or macOS Tahoe 26.7 or later. No additional mitigation steps are indicated.

Description

CVE-2026-65413 is an integer overflow vulnerability in Apple macOS that could allow an app to cause a denial of service. The issue was addressed by improved input validation and fixed in macOS Golden Gate 27, macOS Sequoia 15.8, and macOS Tahoe 26.7. The vulnerability has a medium severity rating with a CVSS score of 5.5.

References

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