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Gnutls CVE-2024-0567

HIGH
Improper Verification of Cryptographic Signature (CWE-347)
N/A vendor:alpine
Information Disclosure Debian Jwt Attack Active Iq Unified Manager Debian Linux Fedora Gnutls Gnu Netapp Fedoraproject
7.5
CVSS 3.1 · NVD
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Vulnerability Assessment

Weakness
CWE
CWE-347
OWASP Top 10:2025
A04:2025 - Cryptographic Failures
ASVS 5.0
V11 - Cryptography Signature verification
This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 1.6% exploitation probability (EPSS)

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AnalysisNVD

Alpine Linux: gnutls fixed in 3.8.3-r0

Affects your stack

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  • Exploit and PoC references, threat intelligence from 22 sources
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Severity by source

NVD PRIMARY 7.5 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

3
PoC Detected
Oct 15, 2026 - 01:23 NVD
https://bugzilla.redhat.com/show_bug.cgi?id=2258544
CVSS changed
Oct 15, 2026 - 01:23 NVD
7.5 (HIGH)
CVE Published
May 27, 2026 - 23:14 nvd
MEDIUM

Threat Intelligence Overview

EPSS Score
1.6%
Top 18% exploitable
Exploit
POC
Public exploit code exists
Data Quality
3 sources
Confidence: Low
NVD CVE.org EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC Yes
EPSS 1.6%
Patch available No
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
Poc
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact· derived
Medium

Priority Score

60
Low Medium High Critical
KEV: 0
EPSS: +2
CVSS: +38
PoC: +20
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Information Disclosure MEDIUM

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

Affected Products (CPE)NVD

cpe:2.3:a:gnu:gnutls:*:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*
cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

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A flaw was found in gnutls. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentic
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6.8 Jun 03

Buffer overflow in the read_server_hello function in lib/gnutls_handshake.c in GnuTLS before 3.1.25, 3.2.x before 3.2.15
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An issue was discovered in GnuTLS before 3.6.15. Rated high severity (CVSS 7.5), this vulnerability is remotely exploita
CVE-2024-0553 HIGH POC
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A vulnerability was found in GnuTLS. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no auth
CVE-2012-1663 HIGH POC
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Double free vulnerability in libgnutls in GnuTLS before 3.0.14 allows remote attackers to cause a denial of service (app
CVE-2023-0361 HIGH POC
7.4 Feb 15

A timing side-channel in the handling of RSA ClientKeyExchange messages was discovered in GnuTLS. Rated high severity (C
CVE-2019-3836 HIGH POC
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It was discovered in gnutls before version 3.6.7 upstream that there is an uninitialized pointer access in gnutls versio
CVE-2019-3829 HIGH POC
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A vulnerability was found in gnutls versions from 3.5.8 before 3.6.7. Rated high severity (CVSS 7.5), this vulnerability
CVE-2012-1569 MEDIUM POC
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The asn1_get_length_der function in decoding.c in GNU Libtasn1 before 2.12, as used in GnuTLS before 3.0.16 and other pr
CVE-2017-5334 CRITICAL
9.8 Mar 24

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 al
CVE-2012-1573 MEDIUM POC
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CVE-2020-13777 HIGH
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GnuTLS 3.6.x before 3.6.14 uses incorrect cryptography for encrypting a session ticket (a loss of confidentiality in TLS

Same weakness CWE-347 – Improper Verification of Cryptographic Signature

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CVE-2025-47827 MEDIUM POC
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CVE-2025-25291 CRITICAL POC
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Same technique Information Disclosure

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CVE-2019-2725 CRITICAL POC
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CVE-2021-34523 CRITICAL POC
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CVE-2013-2251 CRITICAL POC
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CVE-2017-5638 CRITICAL POC
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CVE-2025-24813 CRITICAL POC
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CVE-2025-68613 HIGH POC
8.8
CVE-2015-1701 HIGH POC
7.8
CVE-2017-0147 HIGH POC
7.5

References

Advisories & patches
REF http://www.openwall.com/lists/oss-security/2024/01/19/3 REF https://access.redhat.com/errata/RHSA-2024:0533 REF https://access.redhat.com/errata/RHSA-2024:1082 REF https://access.redhat.com/errata/RHSA-2024:1383 REF https://access.redhat.com/errata/RHSA-2024:2094 REF https://access.redhat.com/security/cve/CVE-2024-0567 REF https://cert-portal.siemens.com/productcert/html/ssa-794697.html REF https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7ZEIOLORQ7N6WRPFXZSYDL2MC4LP7VFV/ REF https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GNXKVR5YNUEBNHAHM5GSYKBZX4W2HMN2/ REF https://lists.gnupg.org/pipermail/gnutls-help/2024-January/004841.html REF https://security.netapp.com/advisory/ntap-20240202-0011/

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