Skip to main content
CVE-2025-9820VulnerabilityPublished Updated

Red Hat Security Advisory: gnutls security update

Affects Red Hat gnutlsSource GCVE Database

0
Compare

Mentioned vulnerabilities

Authoritative record:CVE-2025-9820· Medium 4.0

Not known to be exploited · CVSS 4.0 Medium : upgrade the Red Hat redhat/gnutls package to 10.2 when convenient.

Data as of 5 Nov 2026, 18:19 UTC

CVSS 3.1 base score
4.0Medium
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 10.2
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 26 Jan 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.

What to do

Upgrade the Red Hat redhat/gnutls package to 10.2.

Affected software

ProductAffectedFixed in
gnutlsAffected
  • 3.8.1 – 3.8.10
10 affected builds
Fixed in–
Red Hatredhat/gnutlspkg:rpm/redhat/gnutlsOther threatsAffected
  • <10.2
Fixed in
  • 10.2

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

Description

The gnutls packages provide the GNU Transport Layer Security (GnuTLS) library, which implements cryptographic algorithms and protocols such as SSL, TLS, and DTLS. Security Fix(es): * gnutls: Stack-based Buffer Overflow in gnutls_pkcs11_token_init() Function (CVE-2025-9820) * gnutls: GnuTLS: Denial of Service via excessive resource consumption during certificate verification (CVE-2025-14831) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

References

Community reviews

Loading reviews…