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CVE-2025-64335— Suricata is vulnerable to a null deref when used with base64_data

CVSS 7.5 · High EPSS 0.09% · P26
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I. Basic Information for CVE-2025-64335

Vulnerability Information
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Vulnerability Title
Suricata is vulnerable to a null deref when used with base64_data
Source: NVD (National Vulnerability Database)
Vulnerability Description
Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community. In versions from 8.0.0 to before 8.0.2, a NULL dereference can occur when the entropy keyword is used in conjunction with base64_data. This issue has been patched in version 8.0.2. A workaround involves disabling rules that use entropy in conjunction with base64_data.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
空指针解引用
Source: NVD (National Vulnerability Database)
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版本至8.0.2之前版本存在代码问题漏洞，该漏洞源于entropy关键字与base64_data一起使用时可能导致空指针取消引用。
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

VendorProductAffected VersionsCPESubscribe
OISFsuricata >= 8.0.0, < 8.0.2 -

II. Public POCs for CVE-2025-64335

#POC DescriptionSource LinkShenlong Link
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Qwen3.6-35B-A3B · 10096 chars
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III. Intelligence Information for CVE-2025-64335

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Vendor Advisories for CVE-2025-64335 (1)

Same Patch Batch · OISF · 2025-11-26 · 7 CVEs total

CVE-2025-643347.5 HIGHSuricata is vulnerable to unbounded memory growth for decompression
CVE-2025-643337.5 HIGHSuricata is vulnerable to a stack overflow from big content-type
CVE-2025-643317.5 HIGHSuricata is vulnerable to a stack overflow on large file transfers with http-body-printabl
CVE-2025-643327.5 HIGHSuricata is vulnerable to a stack overflow on larger compressed data
CVE-2025-643307.5 HIGHSuricata is vulnerable to a heap buffer overflow on verdict
CVE-2025-643447.5 HIGHSuricata is vulnerable to a stack overflow from unbounded stack allocation in LuaPushStrin

IV. Related Vulnerabilities

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

V. Comments for CVE-2025-64335

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