What is CVE-2020-27758?

CVE-2020-27758 is a low-severity vulnerability in Imagemagick, classified under Integer Overflow or Wraparound. CVSS score: 3.3/10. Published 2020-12-08.

How severe is CVE-2020-27758?

Low severity. CVSS v3 base score is 3.3 out of 10.

Integer overflow in Imagemagick

CVE-2020-27758

A flaw was found in ImageMagick in coders/txt.c. An attacker who submits a crafted file that is processed by ImageMagick could trigger undefined behavior in the form of values outside the range of type `unsigned long long`. This would most likely lead to an impact to application availability, but could potentially cause other problems related to undefined behavior. This flaw affects ImageMagick versions prior to 7.0.8-68.

Vulnerability class: Integer Overflow

Published 2020-12-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L.

EPSS exploit prediction

EPSS: 0.011 (65.3th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 65th percentile — 65.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: +0.000

Affected products

Imagemagick
Debian Linux — versions 9.0
Imagemagick — versions prior to 7.0.8-68

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

References

bugzilla.redhat.com/show_bug.cgi (Exploit, Patch, Third Party Advisory, Issue Tracking)
lists.debian.org/debian-lts-announce/2021/03/msg00030.html (mailing-list, Mailing List, Third Party Advisory)
lists.debian.org/debian-lts-announce/2023/03/msg00008.html (mailing-list)

Frequently asked questions

What is CVE-2020-27758?: CVE-2020-27758 is a low-severity vulnerability in Imagemagick, classified under Integer Overflow or Wraparound. CVSS score: 3.3/10. Published 2020-12-08.
How severe is CVE-2020-27758?: Low severity. CVSS v3 base score is 3.3 out of 10.