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CVE-2025-59148— Suricata's improper use of entropy keyword can lead to a 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及之前版本存在代码问题漏洞，该漏洞源于未锚定到粘性缓冲区时错误处理熵关键字，可能导致分段错误。

CVSS 7.5 · High EPSS 0.43% · P35

Possible ATT&CK Techniques 1 AI

T1498 · Network Denial of Service
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I. Basic Information for CVE-2025-59148

Vulnerability Information
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Vulnerability Title
Suricata's improper use of entropy keyword can lead to a 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. Versions 8.0.0 and below incorrectly handle the entropy keyword when not anchored to a "sticky" buffer, which can lead to a segmentation fault. This issue is fixed in version 8.0.1. To workaround this issue, users can disable rules using the entropy keyword, or validate they are anchored to a sticky buffer.
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及之前版本存在代码问题漏洞，该漏洞源于未锚定到粘性缓冲区时错误处理熵关键字，可能导致分段错误。
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 < 8.0.1 -

II. Public POCs for CVE-2025-59148

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 9706 chars
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III. Intelligence Information for CVE-2025-59148

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Patches & Fixes for CVE-2025-59148 (1)

Vendor Advisories for CVE-2025-59148 (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-2025-59150 7.5 HIGH Suricata: Keyword tls.subjectaltname can lead to 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-2025-59148

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