What is CVE-2016-7996?

CVE-2016-7996 is a critical-severity vulnerability in Graphicsmagick, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2017-01-18.

How severe is CVE-2016-7996?

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

Buffer overflow in Graphicsmagick

CVE-2016-7996

Heap-based buffer overflow in the WPG format reader in GraphicsMagick 1.3.25 and earlier allows remote attackers to have unspecified impact via a colormap with a large number of entries.

Vulnerability class: Buffer Overflow

Published 2017-01-18 · 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: 0.039 (90.0th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 90.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.039 · newest: 0.039 · change: 0.000

Affected products

Graphicsmagick

Weakness classification (CWE)

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

References

www.securityfocus.com/bid/93464 (VDB Entry, Third Party Advisory, vdb-entry)
www.debian.org/security/2016/dsa-3746 (vendor-advisory)
www.openwall.com/lists/oss-security/2016/10/07/4 (mailing-list, Patch, Mailing List, Third Party Advisory)
www.openwall.com/lists/oss-security/2016/10/08/5 (mailing-list, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2016-7996?: CVE-2016-7996 is a critical-severity vulnerability in Graphicsmagick, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2017-01-18.
How severe is CVE-2016-7996?: Critical severity. CVSS v3 base score is 9.8 out of 10.