How severe is CVE-2004-2531?

CVE-2004-2531 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-2004-2531 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2004-2531?

CVE-2004-2531 affects Gnu Gnutls. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2004-2531?

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-2004-2531 published?

CVE-2004-2531 was published on 2004-12-31 and last updated on 2026-06-16.

CVE-2004-2531

CVE-2004-2531 is a high-severity vulnerability in Gnu Gnutls with a CVSS 2.0 base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 2.0 base score 7.8)
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Gnu Gnutls
Published: 2004-12-31
Last modified: 2026-06-16

Description

X.509 Certificate Signature Verification in Gnu transport layer security library (GnuTLS) 1.0.16 allows remote attackers to cause a denial of service (CPU consumption) via certificates containing long chains and signed with large RSA keys.

Frequently asked questions

What is CVE-2004-2531?: X.509 Certificate Signature Verification in Gnu transport layer security library (GnuTLS) 1.0.16 allows remote attackers to cause a denial of service (CPU consumption) via certificates containing long chains and signed with large RSA keys.
How severe is CVE-2004-2531?: CVE-2004-2531 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2004-2531 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2004-2531?: CVE-2004-2531 affects Gnu Gnutls. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2004-2531?: 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-2004-2531 published?: CVE-2004-2531 was published on 2004-12-31 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:gnu:gnutls:1.0.16:*:*:*:*:*:*:*

More vulnerabilities in Gnu Gnutls

CVE-2008-1948 — Critical (CVSS 10.0): The _gnutls_server_name_recv_params function in lib/ext_server_name.c in libgnutls in gnutls-serv in GnuTLS before…
CVE-2021-20232 — Critical (CVSS 9.8): A flaw was found in gnutls. A use after free issue in client_send_params in lib/ext/pre_shared_key.c may lead to memory…
CVE-2021-20231 — Critical (CVSS 9.8): A flaw was found in gnutls. A use after free issue in client sending key_share extension may lead to memory corruption…
CVE-2017-5337 — Critical (CVSS 9.8): Multiple heap-based buffer overflows in the read_attribute function in GnuTLS before 3.3.26 and 3.5.x before 3.5.8…
CVE-2017-5336 — Critical (CVSS 9.8): Stack-based buffer overflow in the cdk_pk_get_keyid function in lib/opencdk/pubkey.c in GnuTLS before 3.3.26 and 3.5.x…
CVE-2017-5334 — Critical (CVSS 9.8): Double free vulnerability in the gnutls_x509_ext_import_proxy function in GnuTLS before 3.3.26 and 3.5.x before 3.5.8…

All CVEs affecting Gnu Gnutls →