Denial of service in Suricata



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2025-53538
CWE-ID CWE-400
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Suricata
Server applications / IDS/IPS systems, Firewalls and proxy servers

Vendor Open Information Security Foundation

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Resource exhaustion

EUVDB-ID: #VU113203

Risk: Medium

CVSSv4.0: 6.6 [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/E:U/U:Green]

CVE-ID: CVE-2025-53538

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Suricata: 7.0.0 - 7.0.10

CPE2.3 External links

https://github.com/OISF/suricata/commit/1d6d331752e933c46aca0ae7a9679b27462246e3
https://github.com/OISF/suricata/commit/7fa88ea9e7d05e07a7864050cfd836b576669720
https://github.com/OISF/suricata/security/advisories/GHSA-qrr7-crgj-cmh3


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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