Use After Free in Apple macOS
CVE-2026-3779
The application's list box calculate array logic keeps stale references to page or form objects after they are deleted or re-created, which allows crafted documents to trigger a use-after-free when the calculation runs and can potentially lead to arbitrary code execution.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (11.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 11th percentile — 11.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.002 · change: -0.001
Affected products
- Apple macOS
- Foxit Pdf Editor
- Foxit Pdf Reader
- Foxit Software Inc. Pdf Editor — versions Versions 2025.3 and earlier, Versions 14.0.2 and earlier, Versions 13.2.2 and earlier
- Foxit Software Inc. Pdf Reader — versions Versions 2025.3 and earlier
- Microsoft Windows
Weakness classification (CWE)
References
- 14984358-7092-470d-8f34-ade47a7658a2 (Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Third Party Advisory, Exploit)
Frequently asked questions
- What is CVE-2026-3779?
- CVE-2026-3779 is a high-severity vulnerability in Apple macOS, classified under Use After Free. CVSS score: 7.8/10. Published 2026-04-01.
- How severe is CVE-2026-3779?
- High severity. CVSS v3 base score is 7.8 out of 10.