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

Quick assessment

Affected
OISF suricata
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Suricata是Open Information Security基金会的一个网络IDS、IPS和NSM引擎。 Suricata 8.0.0版本存在代码问题漏洞，该漏洞源于解码subjectaltname包含空字节时使用tls.subjectaltname关键字，可能导致分段违规。

CVSS 7.5 · High EPSS 0.53% · P43

Possible ATT&CK Techniques 1 AI

T1498 · Network Denial of Service
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I. Basic Information for CVE-2025-59150

Vulnerability Information
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Vulnerability Title
Suricata: Keyword tls.subjectaltname can lead to NULL-ptr deref
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
Source: CVE Program / CVE List V5
Vulnerability Title
Suricata 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Suricata是Open Information Security基金会的一个网络IDS、IPS和NSM引擎。 Suricata 8.0.0版本存在代码问题漏洞，该漏洞源于解码subjectaltname包含空字节时使用tls.subjectaltname关键字，可能导致分段违规。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
OISF suricata >= 8.0.0, < 8.0.1 -

II. Public POCs for CVE-2025-59150

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 8885 chars
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III. Intelligence Information for CVE-2025-59150

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Patches & Fixes for CVE-2025-59150 (1)

Vendor Advisories for CVE-2025-59150 (2)

Same Patch Batch · OISF · 2025-10-01 · 4 CVEs total

CVE-2025-59147 7.5 HIGH Suricata is Vulnerable to Detection Bypass via Crafted Multiple SYN Packets
CVE-2025-59148 7.5 HIGH Suricata's improper use of entropy keyword can lead to a NULL-ptr deref
CVE-2025-59149 6.2 MEDIUM Suricata: Stack buffer overflow in rule parser when processing long keywords with transfor

IV. Related Vulnerabilities

Same product: suricata
Same vendor: OISF
Same weakness: CWE-476

V. Comments for CVE-2025-59150

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