HOMEVULNERABILITIESCVE-2021-40401
HIGH

CVE-2021-40401

CWE-252Published: February 4, 2022· Updated: Jun 17, 2026

8.6
CVSS v3.1

Official Description

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. A specially-crafted gerber file can lead to code execution. An attacker can provide a malicious file to trigger this vulnerability.

NVD Source

Technical Analysis

CVE-2021-40401 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.6.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeChanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Affected Vendors & Products

Debian1 product(s)
debian linux
Fedora1 product(s)
fedora
gerbv_project1 product(s)
gerbv
Source: NVD CPE · 4 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://talosintelligence.com/vulnerability_reports/TALOS-2021-1415
ADVISORYhttps://www.debian.org/security/2022/dsa-5306
ADVISORYhttps://talosintelligence.com/vulnerability_reports/TALOS-2021-1415
ADVISORYhttps://www.debian.org/security/2022/dsa-5306

All References (6)

→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TUM5GIUZJ7AVHVCXDZW6ZVCAPV2ISN47/
→
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1415Exploit · Third Party Advisory
→
https://www.debian.org/security/2022/dsa-5306Third Party Advisory
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TUM5GIUZJ7AVHVCXDZW6ZVCAPV2ISN47/
→
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1415Exploit · Third Party Advisory
→
https://www.debian.org/security/2022/dsa-5306Third Party Advisory

Quick Facts

CVE IDCVE-2021-40401
CVSS Score8.6 / 10
SeverityHIGH
WeaknessCWE-252
CISA KEVNo
Affected3 vendor(s)
PublishedFeb 4, 2022

Related CVEs (CWE-252)

CVE-2010-0211
9.8
CVE-2007-3798
9.8
CVE-2019-15900
9.8
CVE-2021-38171
9.8
CVE-1999-0199
9.8
CVE-2021-26955
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-40401 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
← All Vulnerabilities·Search for CVE-2021-40401·NVD