CVE-2026-28827: Apple macOS · Path Traversal
Affects Apple macOSSource CVE Database V5
Not known to be exploited · CVSS 9.3 Critical · fixed in 26.4 : patch Apple macOS as a priority.
Data as of 29 Oct 2026, 19:04 UTC
Contested
Critical score, yet low EPSS after six months- EPSS
- 0.2% chance of exploitation in 30 days – higher than 21% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 26.4, 15.7.5, 14.8.5
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 25 Mar 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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 26.4, 15.7.5 or 14.8.5.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| ApplemacOS | Affected
| Fixed in
|
| ApplemacOS | Affected
| Fixed in
|
| ApplemacOS | Affected
| Fixed in
|
AI-suggested
To mitigate CVE-2026-28827, organizations should immediately apply the security updates provided by Apple in macOS Sequoia 15.7.5, Sonoma 14.8.5, and Tahoe 26.4 or later versions. Beyond patching, organizations should enforce strict application vetting policies, allowing only trusted and verified apps to run on macOS systems. Employ endpoint protection solutions capable of detecting anomalous behavior indicative of sandbox escape attempts. Implement least privilege principles to limit local user access and reduce the risk of malicious app installation. Use macOS security features such as System Integrity Protection (SIP) and Hardened Runtime to further restrict app capabilities. Regularly audit installed applications and monitor system logs for unusual activity related to path traversal or sandbox violations. For environments with sensitive data, consider additional containment strategies such as virtualization or dedicated secure workstations. Finally, maintain an incident response plan tailored to macOS environments to quickly address potential exploitation attempts.
Description
A parsing issue in the handling of directory paths was addressed with improved path validation. This issue is fixed in macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4. An app may be able to break out of its sandbox.