Out-of-bounds write in Gerbv
Priority MEDIUM 47CWE-787Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.
Summary
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.
Why it matters now
EPSS 0.02989 87th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | Gerbv | Gerbv 2.7.0,Gerbv dev (commit b5f1eacd), Gerbv forked dev (commit 71493260) | — | No fix listed | CNA |
- Gerbv Vendor— Affected Gerbv 2.7.0,Gerbv dev (commit b5f1eacd), Gerbv forked dev (commit 71493260) Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:gerbv_project:gerbv:2.7.0:*:*:*:*:*:*:* | 2.7.0 | Vulnerable | Gerbv |
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | 10.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* | 11.0 | Vulnerable | Debian |
- cpe:2.3:a:gerbv_project:gerbv:2.7.0:*:*:*:*:*:*:* Versions 2.7.0 Vulnerable ·Gerbv
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* Versions 11.0 Vulnerable ·Debian
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-40394
- 2026-10-03 Alias added: GHSA-936x-jwpc-5p28
References
Sources
- CVE-2021-40394 · CVE Program
- CVE-2021-40394 · NVD
- FIRST EPSS
- GHSA-936x-jwpc-5p28 · GitHub Advisory Database · CC BY 4.0
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