How severe is CVE-2009-5144?

CVE-2009-5144 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2009-5144 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-5144?

CVE-2009-5144 affects Mod Gnutls Project Mod Gnutls. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2009-5144?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2009-5144 published?

CVE-2009-5144 was published on 2018-02-03 and last updated on 2026-06-16.

CVE-2009-5144

CVE-2009-5144 is a high-severity vulnerability in Mod Gnutls Project Mod Gnutls with a CVSS 3.x base score of 7.5. 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-254.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-254
Affected product: Mod Gnutls Project Mod Gnutls
Published: 2018-02-03
Last modified: 2026-06-16

Description

mod-gnutls does not validate client certificates when "GnuTLSClientVerify require" is set in a directory context, which allows remote attackers to spoof clients via a crafted certificate.

Frequently asked questions

What is CVE-2009-5144?: mod-gnutls does not validate client certificates when "GnuTLSClientVerify require" is set in a directory context, which allows remote attackers to spoof clients via a crafted certificate.
How severe is CVE-2009-5144?: CVE-2009-5144 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2009-5144 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-5144?: CVE-2009-5144 affects Mod Gnutls Project Mod Gnutls. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2009-5144?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2009-5144 published?: CVE-2009-5144 was published on 2018-02-03 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:mod_gnutls_project:mod_gnutls:-:*:*:*:*:*:*:*

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