What is the CVSS score of CVE-2024-0553?

CVE-2024-0553 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N. EPSS exploitation probability: 1.7%.

Which versions of Gnutls are affected by CVE-2024-0553?

Organizations using A vulnerability face notable risk from CVE-2024-0553 rated CVSS 7.5. Exploitation could compromise the security of affected deployments.. A patch is available.

Is there a public PoC exploit available for CVE-2024-0553?

Yes, a public proof-of-concept exploit is available for CVE-2024-0553. Prioritise patching immediately. EPSS: 1.7%.

How to fix or mitigate CVE-2024-0553?

Within 7 days: Identify all affected systems and apply vendor patches promptly. Monitor vendor channels for patch availability.

Gnutls CVE-2024-0553

HIGH

Observable Discrepancy (CWE-203)

2024-01-16 secalert@redhat.com

Information Disclosure Microsoft Gnutls Fedora Enterprise Linux

7.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.5 HIGH

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 24, 2026 - 12:22 vuln.today

PoC Detected

Mar 24, 2026 - 12:16 vuln.today

Public exploit code

CVE Published

Jan 16, 2024 - 12:15 nvd

HIGH 7.5

DescriptionCVE.org

A vulnerability was found in GnuTLS. The response times to malformed ciphertexts in RSA-PSK ClientKeyExchange differ from the response times of ciphertexts with correct PKCS#1 v1.5 padding. This issue may allow a remote attacker to perform a timing side-channel attack in the RSA-PSK key exchange, potentially leading to the leakage of sensitive data. CVE-2024-0553 is designated as an incomplete resolution for CVE-2023-5981.

AnalysisAI

A vulnerability was found in GnuTLS. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-203. A vulnerability was found in GnuTLS. The response times to malformed ciphertexts in RSA-PSK ClientKeyExchange differ from the response times of ciphertexts with correct PKCS#1 v1.5 padding. This issue may allow a remote attacker to perform a timing side-channel attack in the RSA-PSK key exchange, potentially leading to the leakage of sensitive data. CVE-2024-0553 is designated as an incomplete resolution for CVE-2023-5981. Affected products include: Gnu Gnutls, Fedoraproject Fedora, Redhat Enterprise Linux.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.