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CVE-2025-43261VulnerabilityPublished Updated

CVE-2025-43261: Apple macOS · An app may be able to break out of its sandbox

Affects Apple macOSSource CVE Database V5

0

Not known to be exploited · CVSS 9.8 Critical · fixed in 15.6 : patch Apple macOS as a priority.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 3.1 base score
9.8Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.7% chance of exploitation in 30 days – higher than 56% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 15.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 29 Jul 2025

  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 2026-10-26.

What to do

Affected software

ProductAffectedFixed in
Apple macOSAffected
  • =0
Fixed in–

AI-suggested

To mitigate CVE-2025-43261, organizations should immediately prioritize updating all affected macOS systems to the patched versions: macOS Sequoia 15.6, macOS Sonoma 14.7.7, or macOS Ventura 13.7.7. Beyond patching, organizations should implement application whitelisting to restrict installation and execution of unauthorized or untrusted applications that could exploit sandbox escape vulnerabilities. Employ endpoint detection and response (EDR) solutions capable of monitoring for anomalous behaviors indicative of sandbox escapes or privilege escalation attempts. Regularly audit and restrict user permissions to minimize the potential impact of compromised applications. Network segmentation can limit lateral movement if an endpoint is compromised. Additionally, monitor threat intelligence feeds and Apple security advisories for any emerging exploit reports or indicators of compromise related to this vulnerability. For environments where immediate patching is not feasible, consider disabling or restricting features that rely heavily on sandboxed applications or deploying additional runtime protections such as macOS System Integrity Protection (SIP) and Apple’s Endpoint Security framework. Finally, educate users about the risks of installing untrusted software and enforce strict policies on software sourcing.

Description

A logic issue was addressed with improved checks. This issue is fixed in macOS Sequoia 15.6, macOS Sonoma 14.7.7, macOS Ventura 13.7.7. An app may be able to break out of its sandbox.

References

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