CVE-2021-40402

Name: CVE-2021-40402
Creator: NVD / NIST
Published: 2022-04-14T20:15:08.89+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.23%

Last modified Jun 17, 2026

CVE-2021-40402 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An out-of-bounds read vulnerability exists in the RS-274X aperture macro multiple outline primitives functionality of Gerbv 2.7.0 and dev (commit b5f1eacd), and Gerbv forked 2.7.1 and 2.8.0. A specially-crafted Gerber file can lead to information disclosure. EPSS estimates a 1.23% chance of exploitation in the next 30 days.

Description

An out-of-bounds read vulnerability exists in the RS-274X aperture macro multiple outline primitives functionality of Gerbv 2.7.0 and dev (commit b5f1eacd), and Gerbv forked 2.7.1 and 2.8.0. A specially-crafted Gerber file can lead to information disclosure. An attacker can provide a malicious file to trigger this vulnerability.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.23%

65.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Gerbv Project	Gerbv	2.7.0
Gerbv Project	Gerbv	2.7.1
Gerbv Project	Gerbv	2.8.0

References

https://talosintelligence.com/vulnerability_reports/TALOS-2021-1416Exploit, Third Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1416Exploit, Third Party Advisory

Timeline

Published: Apr 14, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-40402?

How severe is CVE-2021-40402?

CVE-2021-40402 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.23% probability of exploitation in the next 30 days.

How do I fix CVE-2021-40402?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-40402?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST