What is CVE-2016-4629?

CVE-2016-4629 is a critical-severity vulnerability in Apple Mac OS X, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2016-07-22.

How severe is CVE-2016-4629?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Apple Mac OS X

CVE-2016-4629

ImageIO in Apple OS X before 10.11.6 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via crafted xStride and yStride values in an EXR image.

Vulnerability class: Buffer Overflow

Published 2016-07-22 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.074 (94.3th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 94.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.074 · newest: 0.074 · change: 0.000

Affected products

Apple Mac OS X

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

References

www.securityfocus.com/bid/91824 (vdb-entry)
www.talosintelligence.com/reports/TALOS-2016-0180/ (Exploit, Third Party Advisory)
lists.apple.com/archives/security-announce/2016/Jul/msg00000.html (vendor-advisory, Mailing List, Vendor Advisory)
www.securitytracker.com/id/1036348 (vdb-entry)
support.apple.com/HT206903 (Vendor Advisory)
github.com/openexr/openexr/issues/563

Frequently asked questions

What is CVE-2016-4629?: CVE-2016-4629 is a critical-severity vulnerability in Apple Mac OS X, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2016-07-22.
How severe is CVE-2016-4629?: Critical severity. CVSS v3 base score is 9.8 out of 10.