How severe is CVE-2011-3634?

CVE-2011-3634 has a CVSS 2.0 base score of 2.6, rated low severity.

Is CVE-2011-3634 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-3634?

CVE-2011-3634 primarily affects Debian Advanced Package Tool. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-3634?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2011-3634 published?

CVE-2011-3634 was published on 2014-03-01 and last updated on 2026-06-16.

CVE-2011-3634

CVE-2011-3634 is a low-severity vulnerability in Debian Advanced Package Tool with a CVSS 2.0 base score of 2.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-200.

Key facts

Severity: Low (CVSS 2.0 base score 2.6)
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Debian Advanced Package Tool
Published: 2014-03-01
Last modified: 2026-06-16

Description

methods/https.cc in apt before 0.8.11 accepts connections when the certificate host name fails validation and Verify-Host is enabled, which allows man-in-the-middle attackers to obtain repository credentials via unspecified vectors.

Frequently asked questions

What is CVE-2011-3634?: methods/https.cc in apt before 0.8.11 accepts connections when the certificate host name fails validation and Verify-Host is enabled, which allows man-in-the-middle attackers to obtain repository credentials via unspecified vectors.
How severe is CVE-2011-3634?: CVE-2011-3634 has a CVSS 2.0 base score of 2.6, rated low severity.
Is CVE-2011-3634 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-3634?: CVE-2011-3634 primarily affects Debian Advanced Package Tool. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-3634?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-3634 published?: CVE-2011-3634 was published on 2014-03-01 and last updated on 2026-06-16.

References

Affected products (12)

cpe:2.3:a:debian:advanced_package_tool:*:*:*:*:*:*:*:*
cpe:2.3:a:debian:advanced_package_tool:0.8.0:*:*:*:*:*:*:*
cpe:2.3:a:debian:advanced_package_tool:0.8.0:pre1:*:*:*:*:*:*
cpe:2.3:a:debian:advanced_package_tool:0.8.0:pre2:*:*:*:*:*:*
cpe:2.3:a:debian:advanced_package_tool:0.8.1:*:*:*:*:*:*:*
cpe:2.3:a:debian:advanced_package_tool:0.8.10:*:*:*:*:*:*:*
cpe:2.3:a:debian:advanced_package_tool:0.8.10.1:*:*:*:*:*:*:*
cpe:2.3:a:debian:advanced_package_tool:0.8.10.2:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:8.04:-:lts:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:10.04:-:lts:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:10.10:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:11.04:*:*:*:*:*:*:*

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