crypto-x509 up to 1.24.10/1.25.4 on Go Certificate Chain certificate validation

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in crypto-x509 up to 1.24.10/1.25.4 on Go. This affects an unknown part of the component Certificate Chain Handler. Executing a manipulation can lead to certificate validation. The identification of this vulnerability is CVE-2025-61727. The attack may be launched remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in crypto-x509 up to 1.24.10/1.25.4 on Go. It has been declared as critical. This vulnerability affects an unknown part of the component Certificate Chain Handler. The manipulation with an unknown input leads to a certificate validation vulnerability. The CWE definition for the vulnerability is CWE-295. The product does not validate, or incorrectly validates, a certificate. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

An excluded subdomain constraint in a certificate chain does not restrict the usage of wildcard SANs in the leaf certificate. For example a constraint that excludes the subdomain test.example.com does not prevent a leaf certificate from claiming the SAN *.example.com.

This vulnerability was named CVE-2025-61727 since 09/30/2025. The exploitation appears to be difficult. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1587.003.

The vulnerability scanner Nessus provides a plugin with the ID 278642 (openSUSE 16 Security Update : go1.25 (openSUSE-SU-2025-20157-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 1.24.11 or 1.25.5 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (278642), EUVD (EUVD-2025-201106) and CERT Bund (WID-SEC-2025-2724). Once again VulDB remains the best source for vulnerability data.

Affected

  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • SUSE Linux
  • Oracle Linux
  • IBM Business Automation Workflow
  • SUSE openSUSE
  • RESF Rocky Linux
  • Red Hat OpenStack
  • Golang Go
  • Microsoft Azure Linux
  • Red Hat OpenShift

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.6
VulDB Temp Score: 5.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Certificate validation
CWE: CWE-295 / CWE-287
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 278642
Nessus Name: openSUSE 16 Security Update : go1.25 (openSUSE-SU-2025-20157-1)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: crypto-x509 1.24.11/1.25.5

Timelineinfo

09/30/2025 CVE reserved
12/03/2025 +64 days Advisory disclosed
12/03/2025 +0 days VulDB entry created
03/19/2026 +106 days VulDB entry last update

Sourcesinfo

Status: Confirmed

CVE: CVE-2025-61727 (🔒)
GCVE (CVE): GCVE-0-2025-61727
GCVE (VulDB): GCVE-100-334204
EUVD: 🔒
CERT Bund: WID-SEC-2025-2724 - Golang Go: Mehrere Schwachstellen

Entryinfo

Created: 12/03/2025 23:38
Updated: 03/19/2026 11:35
Changes: 12/03/2025 23:38 (53), 12/04/2025 12:13 (1), 12/11/2025 05:57 (7), 12/15/2025 14:51 (2), 01/21/2026 12:52 (1), 01/23/2026 02:00 (1), 02/02/2026 10:43 (1), 02/25/2026 16:00 (1), 03/19/2026 11:35 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

Discussion

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