What is CVE-2015-7802?

CVE-2015-7802 is a medium-severity vulnerability in Optipng Project, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.5/10. Published 2016-04-20.

How severe is CVE-2015-7802?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Buffer overflow in Optipng Project

CVE-2015-7802

gifread.c in gif2png, as used in OptiPNG before 0.7.6, allows remote attackers to cause a denial of service (uninitialized memory read) via a crafted GIF file.

Vulnerability class: Buffer Overflow

Published 2016-04-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.016 (74.3th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 74.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000

Affected products

Optipng Project — versions 0.7.5
Canonical Ubuntu Linux — versions 12.04, 14.04, 15.10

Weakness classification (CWE)

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

References

optipng.sourceforge.net/history.txt (Vendor Advisory)
www.ubuntu.com/usn/USN-2951-1 (vendor-advisory)
sourceforge.net/p/optipng/bugs/53/

Frequently asked questions

What is CVE-2015-7802?: CVE-2015-7802 is a medium-severity vulnerability in Optipng Project, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.5/10. Published 2016-04-20.
How severe is CVE-2015-7802?: Medium severity. CVSS v3 base score is 5.5 out of 10.