How severe is CVE-2014-8155?

CVE-2014-8155 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2014-8155 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-8155?

CVE-2014-8155 affects Gnu Gnutls. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2014-8155?

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

When was CVE-2014-8155 published?

CVE-2014-8155 was published on 2015-08-14 and last updated on 2026-06-17.

CVE-2014-8155

CVE-2014-8155 is a medium-severity vulnerability in Gnu Gnutls with a CVSS 2.0 base score of 4.3. 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-17.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 1% (60th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-17
Affected product: Gnu Gnutls
Published: 2015-08-14
Last modified: 2026-06-17

Description

GnuTLS before 2.9.10 does not verify the activation and expiration dates of CA certificates, which allows man-in-the-middle attackers to spoof servers via a certificate issued by a CA certificate that is (1) not yet valid or (2) no longer valid.

Frequently asked questions

What is CVE-2014-8155?: GnuTLS before 2.9.10 does not verify the activation and expiration dates of CA certificates, which allows man-in-the-middle attackers to spoof servers via a certificate issued by a CA certificate that is (1) not yet valid or (2) no longer valid.
How severe is CVE-2014-8155?: CVE-2014-8155 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2014-8155 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2014-8155?: CVE-2014-8155 affects Gnu Gnutls. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2014-8155?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2014-8155 published?: CVE-2014-8155 was published on 2015-08-14 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:gnu:gnutls:*:*:*:*:*:*:*:*

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