Null Dereference Vulnerability in Suricata Network Engine
CVE-2025-64335

7.5HIGH

Key Information:

Vendor

Oisf

Status
Suricata
Vendor
CVE Published:
26 November 2025

What is CVE-2025-64335?

A NULL dereference vulnerability exists in Suricata, a prominent network IDS and IPS engine, affecting versions from 8.0.0 to prior to 8.0.2. This issue arises when the 'entropy' keyword is misused alongside base64_data, potentially leading to application crashes. The problem has been resolved in version 8.0.2. Users are advised to upgrade to the latest version or, as a temporary workaround, disable specific rules utilizing the entropy keyword in conjunction with base64_data to prevent exploitation.

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Affected Version(s)

suricata >= 8.0.0, < 8.0.2

References

https://github.com/OISF/suricata/security/advisories/GHSA...
x_refsource_CONFIRM
https://github.com/OISF/suricata/commit/c935f08cd988600fd...
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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