What’s Vulnerable › Vulnerabilities

CVE-2025-59150: Suricata: Keyword tls.subjectaltname can lead to NULL-ptr deref

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-10-01 · updated 2026-10-12
• Weakness: CWE-476

Description

Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community. Version 8.0.0's usage of the tls.subjectaltname keyword can lead to a segmentation fault when the decoded subjectaltname contains a NULL byte. This issue is fixed in version 8.0.1. To workaround this issue, disable rules using the tls.subjectaltname keyword.

Affected products

• OISF suricata: 8.0.0

References

• https://forum.suricata.io/t/suricata-8-0-1-and-7-0-12-released/6018
• https://github.com/OISF/suricata/commit/d590fdfe42e995fd558315f0c24f9a352e21479d
• https://github.com/OISF/suricata/security/advisories/GHSA-mhv7-qfmj-m3f3
• https://redmine.openinfosecfoundation.org/issues/7881
• https://www.vicarius.io/vsociety/posts/cve-2025-59150-suricata-detection-script
• https://www.vicarius.io/vsociety/posts/cve-2025-59150-suricata-mitigation-script

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