CVE-2020-18831

unknown

Published 2023-08-22 · Modified 2025-10-09

CVSS v3

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CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS v2

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VIR risk

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Description

Buffer Overflow vulnerability in tEXtToDataBuf function in pngimage.cpp in Exiv2 0.27.1 allows remote attackers to cause a denial of service and other unspecified impacts via use of crafted file.

Predictions

Exploit likelihood

20%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2020-18831

vendor Authored 2026-05-27

Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2020-18831.html

OS impact

OS	Version	Status	Fixed in
sles		affected
debian	bookworm	fixed	`0.27.2-6`
debian	bullseye	fixed	`0.27.2-6`
debian	forky	fixed	`0.27.2-6`
debian	sid	fixed	`0.27.2-6`
debian	trixie	fixed	`0.27.2-6`

Package impact

Ecosystem	Package	Vulnerable	Fixed
PyPI	exiv2

References

https://www.suse.com/security/cve/CVE-2020-18831.html
https://www.exiv2.org/download.html
https://github.com/Exiv2/exiv2/issues/828
https://security-tracker.debian.org/tracker/CVE-2020-18831

Verify integrity in audit chain (admin only). AS-IS.