What is CVE-2016-5735?

CVE-2016-5735 is a high-severity vulnerability in Pngquant, classified under Integer Overflow or Wraparound. CVSS score: 7.8/10. Published 2017-05-23.

How severe is CVE-2016-5735?

High severity. CVSS v3 base score is 7.8 out of 10.

Integer overflow in Pngquant

CVE-2016-5735

Integer overflow in the rwpng_read_image24_libpng function in rwpng.c in pngquant 2.7.0 allows remote attackers to have unspecified impact via a crafted PNG file, which triggers a buffer overflow.

Vulnerability class: Integer Overflow

Published 2017-05-23 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.018 (77.7th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 78th percentile — 77.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000

Affected products

Pngquant — versions 2.7.0

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

References

sf.snu.ac.kr/gil.hur/publications/shovel.pdf (Technical Description, Exploit, Third Party Advisory)
github.com/pornel/pngquant/commit/b7c217680cda02dddced245d237ebe8c383be285 (Patch, Third Party Advisory)
lists.debian.org/debian-lts-announce/2020/06/msg00028.html (mailing-list)

Frequently asked questions

What is CVE-2016-5735?: CVE-2016-5735 is a high-severity vulnerability in Pngquant, classified under Integer Overflow or Wraparound. CVSS score: 7.8/10. Published 2017-05-23.
How severe is CVE-2016-5735?: High severity. CVSS v3 base score is 7.8 out of 10.