Resource exhaustion in Suricata - CVE-2025-53538

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Main Vulnerability Database Vulnerabilities #VU113203

Resource exhaustion in Suricata - CVE-2025-53538

Published: July 24, 2025


Vulnerability identifier: #VU113203
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-53538
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to mishandling of data on HTTP2 stream 0. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.


Affected software

Suricata
Fedora
suricata

How to mitigate CVE-2025-53538

Install updates from vendor's website.

Suricata - addressed in versions 7.0.11, 8.0.0
suricata - addressed in versions 7.0.11-1.el8, 7.0.11-1.el9, 7.0.11-1.fc41, 7.0.11-1.fc42

External References

Related Security Bulletins