CVE-2021-40394

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.0% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-12-22 · updated 2026-06-17
Weakness: CWE-787

Description

An out-of-bounds write vulnerability exists in the RS-274X aperture macro variables handling functionality of Gerbv 2.7.0 and dev (commit b5f1eacd) and the forked version of Gerbv (commit 71493260). A specially-crafted gerber file can lead to code execution. An attacker can provide a malicious file to trigger this vulnerability.

Affected products

Debian Linux: 9.0, 10.0, 11.0
Gerbv: 2.7.0

References

https://lists.debian.org/debian-lts-announce/2023/09/msg00040.html
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1404
https://www.debian.org/security/2022/dsa-5306
https://lists.debian.org/debian-lts-announce/2023/09/msg00040.html
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1404
https://www.debian.org/security/2022/dsa-5306

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