Improper signature verification in apt
Priority LOW 20CWE-347Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-347.
Summary
It was found that apt-key in apt, all versions, do not correctly validate gpg keys with the master keyring, leading to a potential man-in-the-middle attack.
Why it matters now
EPSS 0.01191 68th 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 |
|---|---|---|---|---|---|
| apt | apt | All versions | — | No fix listed | CNA |
- apt Vendorapt Affected All versions Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:debian:advanced_package_tool:*:*:*:*:*:*:*:* | all versions | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Debian |
| 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:a:debian:advanced_package_tool:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
- 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
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2011-3374
- 2026-10-03 Alias added: GHSA-xpxf-p5mx-cq4f
References
Advisory 4
More apt vulnerabilities
- TI-2006-01631 Multiple SQL injection vulnerabilities in modules.php in APT-webshop-system 4.0 PRO, 3.0… CVSS 2.0HIGH 7.5
- TI-2006-01632 Unspecified vulnerability in modules.php in APT-webshop-system 4.0 PRO, 3.0 BASIC, and… CVSS 2.0MEDIUM 5.0
- TI-2006-01633 Cross-site scripting (XSS) vulnerability in APT-webshop-system 4.0 PRO, 3.0 BASIC, and… CVSS 2.0MEDIUM 4.3
Sources
- CVE-2011-3374 · CVE Program
- CVE-2011-3374 · NVD
- FIRST EPSS
- GHSA-xpxf-p5mx-cq4f · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences