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CVE-2011-3374

18
FAUCET Score

CVE-2011-3374 describes a vulnerability in apt-key, affecting all versions of Debian's Advanced Package Tool, where gpg keys are not properly validated against the master keyring. This flaw enables a potential man-in-the-middle attack, allowing an attacker to compromise the integrity of package updates. Rated with a CVSS score of 3.7 (LOW), the attack requires high complexity but has a low impact on integrity, with no confidentiality or availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:a:debian:advanced_package_tool:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
10.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

3.7LOW

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.19%
Probability of exploitation in next 30 days
EPSS Percentile
64.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0119 is in the 46th percentile among its peer group of 1,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.3 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

access.redhat.com / security/cve/cve-2011-3374
Broken Link
bugs.debian.org / cgi-bin/bugreport.cgi
Issue TrackingMailing ListThird Party Advisory
people.canonical.com / ~ubuntu-security/cve/2011/CVE-2011-3374.html
Third Party Advisory
seclists.org / fulldisclosure/2011/Sep/221
ExploitMailing ListThird Party Advisory
security-tracker.debian.org / tracker/CVE-2011-3374
Third Party Advisory
snyk.io / vuln/SNYK-LINUX-APT-116518
Broken Link
ubuntu.com / security/CVE-2011-3374
Third Party Advisory