CVE-2025-59150: suricata Null Dereference

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.

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CVSS v3.1 Score

7.5

HIGH

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

Weakness Type (CWE)

CWE-476 CWE-476

Affected Products

Vendor	Product	Versions
oisf	suricata	All

References

Advisories & Patches

https://github.com/OISF/suricata/commit/d590fdfe42e995fd558315f0c24f9a352e21479d https://github.com/OISF/suricata/security/advisories/GHSA-mhv7-qfmj-m3f3 https://redmine.openinfosecfoundation.org/issues/7881

Exploits

https://redmine.openinfosecfoundation.org/issues/7881

Other References

https://forum.suricata.io/t/suricata-8-0-1-and-7-0-12-released/6018 https://www.vicarius.io/vsociety/posts/cve-2025-59150-suricata-detection-script https://www.vicarius.io/vsociety/posts/cve-2025-59150-suricata-mitigation-script

Frequently Asked Questions

What is CVE-2025-59150? +

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. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2025-59150? +

CVE-2025-59150 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-59150? +

CVE-2025-59150 affects products from oisf, specifically: suricata. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-59150? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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