Is CVE-2011-4407 being actively exploited?

CVE-2011-4407 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2011-4407?

CVE-2011-4407 has a CVSS 2.0 base score of 4.3 (MEDIUM).

CVE-2011-4407

MEDIUM · CVSS 4.3EPSS 0.6%EU EUVD

ppa.py in Software Properties before 0.81.13.3 does not validate the server certificate when downloading PPA GPG key fingerprints, which allows man-in-the-middle (MITM) attackers to spoof GPG keys for a package repository.

Key facts

CVSS score: 4.3 (v2.0)
Severity: MEDIUM
CVSS vector: AV:N/AC:M/Au:N/C:N/I:P/A:N
Weakness (CWE): CWE-20
EPSS score: 0.6% (50th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2011-4336)
Published: May 14, 2014
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2011-4336 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

canonical / software-properties
canonical / ubuntu linux
canonical / ubuntu linux
canonical / ubuntu linux
canonical / ubuntu linux

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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