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No exploitation reportedAwaiting NVD analysis

CVE-2026-86958

Arbitrary Code Execution via Pointer Authentication Bypass in Apple macOS

No exploitation reported by the sources we read.

  • Published2026-10-26
  • WeaknessCWE-119

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

The issue was addressed with improved memory handling. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8.2, macOS Tahoe 26.7.2. An attacker with memory write capability may be able to bypass pointer authentication codes and run arbitrary code.

Timeline

dates in UTC
  1. 2026-10-2620:40CVE publishedCNA

Versions per branch

Products declared by the CNA

As apple, the CNA that assigned this CVE, declared them in the CVE record; versions as written. NVD lists no product for this CVE yet: this is the only product data so far.

  • Apple macOS
    Affected
    • < 15.8.2fixed in 15.8.2custom
    • < 26.7.2fixed in 26.7.2custom
    • < 27fixed in 27custom

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-10-26

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-86958 yet.

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
2026-10-26
Last Modified
2026-11-06
NVD status
Undergoing Analysis
GitHub Advisory
GHSA-xm68-fj23-vw2x

Frequently asked questions

What is CVE-2026-86958?

The issue was addressed with improved memory handling. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8.2, macOS Tahoe 26.7.2. An attacker with memory write capability may be able to bypass pointer authentication codes and run arbitrary code.

Is CVE-2026-86958 actively exploited?

Active exploitation of CVE-2026-86958 has not been confirmed. Its EPSS score was 0.3% on 2026-11-05, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-86958?

CVE-2026-86958 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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