What is CVE-2020-18774?

CVE-2020-18774 is a medium-severity vulnerability in Exiv2, classified under Divide By Zero. CVSS score: 6.5/10. Published 2021-08-23.

How severe is CVE-2020-18774?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Exiv2

CVE-2020-18774

A float point exception in the printLong function in tags_int.cpp of Exiv2 0.27.99.0 allows attackers to cause a denial of service (DOS) via a crafted tif file.

Published 2021-08-23 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.013 (69.5th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 69.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000

Affected products

Exiv2 — versions 0.27.99.0

Weakness classification (CWE)

CWE-369 — Divide By Zero

References

github.com/Exiv2/exiv2/issues/759 (Exploit, Third Party Advisory)
security.gentoo.org/glsa/202312-06 (vendor-advisory)

Frequently asked questions

What is CVE-2020-18774?: CVE-2020-18774 is a medium-severity vulnerability in Exiv2, classified under Divide By Zero. CVSS score: 6.5/10. Published 2021-08-23.
How severe is CVE-2020-18774?: Medium severity. CVSS v3 base score is 6.5 out of 10.