Out-of-bounds Read in Apple macOS
CVE-2026-57257
During the PRC parsing stage, there is a lack of boundary verification for the PRC entity index, which leads to an out-of-bounds read of the entity array. As a result, the application crashes.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H.
EPSS exploit prediction
EPSS: 0.002 (3.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 4th percentile — 3.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Apple macOS
- Foxit Pdf Editor
- Foxit Pdf Reader
- Foxit Software Inc. Pdf Editor — versions Versions 2026.1.1 and earlier, Versions 14.0.4 and earlier, Versions 13.2.4 and earlier
- Foxit Software Inc. Pdf Reader — versions Versions 2026.1.1 and earlier
- Microsoft Windows
Weakness classification (CWE)
References
- 14984358-7092-470d-8f34-ade47a7658a2 (Vendor Advisory)
Frequently asked questions
- What is CVE-2026-57257?
- CVE-2026-57257 is a medium-severity vulnerability in Apple macOS, classified under Out-of-bounds Read. CVSS score: 6.1/10. Published 2026-07-08.
- How severe is CVE-2026-57257?
- Medium severity. CVSS v3 base score is 6.1 out of 10.