A race condition was addressed with additional validation.

published 2026-05-11 5 mo ago modified 2026-10-26 13 d ago also EUVD-2026-29216

cvss: 4.7; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.1%; EPSS 0.1% chance of exploitation in 30 days, percentile 0%
public exploits: 0; none known

A race condition was addressed with additional validation. This issue is fixed in macOS Tahoe 26.4. An app may be able to access sensitive user data.

Patch / fix

fixed in 1

Apple macOS 26.4

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 5 mo ago (2026-05-12)

Exploit prediction

0.08% chance of exploitation in the next 30 days, higher than 0% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	4.7	CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
CNA	3.1	4.7	CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N

Affected products

Apple macOS

Classification

Weakness

CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization

References

support.apple.com /en-us/126794
release-notes, vendor-advisory

Sources

CVE List CVE-2026-28830
NVD CVE-2026-28830

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary