CVE-2021-40393
An out-of-bounds write vulnerability exists in the RS-274X aperture macro variables handling...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
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.
- Record
CVE-2021-40393- CVSS 3.0
- 10.0 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H - Weakness
- CWE-119
- Updated
- 2026-11-02
EUVDEUVD-2021-27570
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.
- Record
EUVD-2021-27570- CVSS 3.0
- 10.0 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-w67q-2hr6-7cjf
An out-of-bounds write vulnerability exists in the RS-274X aperture macro variables handling...
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.
- Record
GHSA-w67q-2hr6-7cjf- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-119, CWE-787
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2021-40393- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 3.0
- 10.0 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-119, CWE-787
- Updated
- 2026-11-02
OSV
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.
- Record
CVE-2021-40393- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2021-40393
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.
- Record
DEBIAN-CVE-2021-40393- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
Show 4 moreShow less
OSVUBUNTU-CVE-2021-40393
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.
- Record
UBUNTU-CVE-2021-40393- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 3.0
- 10.0 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H - Updated
- 2026-11-02
OSVMGASA-2022-0260 No score
Updated gerbv packages fix security vulnerability
An out-of-bounds write vulnerability exists in the drill format T-code tool number functionality of Gerbv 2.7.0, dev (commit b5f1eacd), and the forked version of Gerbv (commit 71493260). (CVE-2021-40391)
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). (CVE-2021-40393, CVE-2021-40394)
An out-of-bounds read vulnerability exists in the RS-274X aperture macro outline primitive functionality of Gerbv 2.7.0 and dev (commit b5f1eacd) and the forked version of Gerbv (commit d7f42a9a). (CVE-2021-40400)
A use-after-free vulnerability exists in the RS-274X aperture definition tokenization functionality of Gerbv 2.7.0 and dev (commit b5f1eacd) and Gerbv forked 2.7.1. (CVE-2021-40401)
- Record
MGASA-2022-0260- Updated
- 2026-11-02
OSVopenSUSE-SU-2024:12064-1 No score
gerbv-2.8.2-1.1 on GA media
These are all security issues fixed in the gerbv-2.8.2-1.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:12064-1- Updated
- 2026-11-02
OSVUSN-6209-1 No score
Gerbv vulnerabilities
Claudio Bozzato discovered that Gerbv incorrectly handled certain Gerber files. An attacker could possibly use this issue to crash Gerbv (resulting in a denial of service), or execute arbitrary code. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. (CVE-2021-40391, CVE-2021-40394)
Claudio Bozzato discovered that Gerbv incorrectly handled certain Gerber files. An attacker could possibly use this issue to disclose information, crash Gerbv (resulting in a denial of service), or execute arbitrary code. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. (CVE-2021-40393)
Claudio Bozzato discovered that Gerbv incorrectly handled certain Gerber files. An attacker could possibly use this issue to disclose information. (CVE-2021-40400, CVE-2021-40403)
Claudio Bozzato discovered that Gerbv incorrectly handled certain Gerber files. An attacker could possibly use this issue to disclose information, crash Gerbv (resulting in a denial of service), or execute arbitrary code. (CVE-2021-40401)
- Record
USN-6209-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
gerbvDebian:12 |
before 2.8.2-1 | 2.8.2-1 |
gerbvDebian:13 |
before 2.8.2-1 | 2.8.2-1 |
gerbvDebian:10 From an advisory covering 3 CVEs |
before 2.7.0-1+deb10u3, plus listed versions 2.7.0-12.7.0-1+deb10u12.7.0-1+deb10u2 |
2.7.0-1+deb10u3 |
gerbvDebian:11 From an advisory covering 4 CVEs |
before 2.7.0-2+deb11u2, plus listed versions 2.7.0-22.7.0-2+deb11u1 |
2.7.0-2+deb11u2 |
gerbvMageia:8 From an advisory covering 5 CVEs |
before 2.7.3-1.mga8 | 2.7.3-1.mga8 |
gerbvUbuntu:Pro:14.04:LTS |
before 2.6.0-1ubuntu0.14.04.1~esm1, plus listed versions 2.6.0-1 |
2.6.0-1ubuntu0.14.04.1~esm1 |
gerbvUbuntu:Pro:16.04:LTS |
before 2.6.0-1ubuntu0.16.04.1~esm1, plus listed versions 2.6.0-1 |
2.6.0-1ubuntu0.16.04.1~esm1 |
gerbvUbuntu:Pro:18.04:LTS |
before 2.6.1-3ubuntu0.1~esm1, plus listed versions 2.6.1-22.6.1-3 |
2.6.1-3ubuntu0.1~esm1 |
gerbvUbuntu:20.04:LTS |
before 2.7.0-1ubuntu0.1, plus listed versions 2.7.0-1 |
2.7.0-1ubuntu0.1 |
gerbvUbuntu:Pro:22.04:LTS |
before 2.8.2-1ubuntu0.1~esm1, plus listed versions 2.7.0-22.7.1-12.8.0-12.8.1-12.8.2-1 |
2.8.2-1ubuntu0.1~esm1 |
Show 5 moreShow less
| Package | Affected | Fixed |
|---|---|---|
gerbvUbuntu:Pro:14.04:LTS From an advisory covering 6 CVEs |
before 2.6.0-1ubuntu0.14.04.1~esm1, plus listed versions 2.6.0-1 |
2.6.0-1ubuntu0.14.04.1~esm1 |
gerbvUbuntu:Pro:16.04:LTS From an advisory covering 6 CVEs |
before 2.6.0-1ubuntu0.16.04.1~esm1, plus listed versions 2.6.0-1 |
2.6.0-1ubuntu0.16.04.1~esm1 |
gerbvUbuntu:Pro:18.04:LTS From an advisory covering 6 CVEs |
before 2.6.1-3ubuntu0.1~esm1, plus listed versions 2.6.1-22.6.1-3 |
2.6.1-3ubuntu0.1~esm1 |
gerbvUbuntu:20.04:LTS From an advisory covering 6 CVEs |
before 2.7.0-1ubuntu0.1, plus listed versions 2.7.0-1 |
2.7.0-1ubuntu0.1 |
gerbvUbuntu:Pro:22.04:LTS From an advisory covering 6 CVEs |
before 2.8.2-1ubuntu0.1~esm1, plus listed versions 2.7.0-22.7.1-12.8.0-12.8.1-12.8.2-1 |
2.8.2-1ubuntu0.1~esm1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| aliases, products | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-40393 is a critical vulnerability (CVSS 10.0) in Gerbv, published December 22, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.14%, the 87th percentile. Fixed in gerbv 2.8.2-1.
References
talosintelligence.com/vulnerability_reports/TALOS-2021-1404
debian.org/security/2022/dsa-5306
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/37OSNNO5N5FJZP6ZBYRJMML5HYMJQIX7
lists.debian.org/debian-lts-announce/2023/09/msg00040.html
nvd.nist.gov/vuln/detail/CVE-2021-40393
Show 15 moreShow less
github.com/advisories/GHSA-w67q-2hr6-7cjf
security-tracker.debian.org/tracker/CVE-2021-40393
advisories.mageia.org/MGASA-2022-0260.html
bugs.mageia.org/show_bug.cgi?id=30622
ubuntu.com/security/CVE-2021-40393
cve.org/CVERecord?id=CVE-2021-40393
suse.com/security/cve/CVE-2021-40391