What’s Vulnerable › Vulnerabilities

CVE-2025-64334: Suricata is vulnerable to unbounded memory growth for decompression

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-11-26 · updated 2026-10-18
• Weakness: CWE-770

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, compressed HTTP data can lead to unbounded memory growth during decompression. This issue has been patched in version 8.0.2. A workaround involves disabling LZMA decompression or limiting response-body-limit size.

Affected products

• OISF suricata: from 8.0.0 before 8.0.2 — fixed in 8.0.2

How to fix

Upgrade to a fixed version: OISF suricata 8.0.2. Check the vendor advisory for mitigations.

References

• https://github.com/OISF/suricata/commit/00f04daa3a44928dfdd0003cb9735469272c94a1
• https://github.com/OISF/suricata/security/advisories/GHSA-r5jf-v2gx-gx8w

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