Memory Management Vulnerability in Suricata by Open Information Security Foundation
CVE-2025-53538

7.5HIGH

Key Information:

Vendor

Oisf

Status
Suricata
Vendor
CVE Published:
22 July 2025

What is CVE-2025-53538?

A security vulnerability in Suricata versions 7.0.10 and below, as well as 8.0.0-beta1 through 8.0.0-rc1, arises from mishandling data within HTTP2 stream 0, potentially causing uncontrolled memory usage. This issue may lead to a loss of visibility in network monitoring and intrusion detection functions. Users can mitigate this vulnerability by disabling the HTTP/2 parser or implementing specific signatures. Fortunately, the issue is resolved in Suricata versions 7.0.11 and 8.0.0.

Affected Version(s)

suricata < 7.0.11 < 7.0.11

suricata >= 8.0.0-beta1, < 8.0.0 < 8.0.0-beta1, 8.0.0

References

https://github.com/OISF/suricata/security/advisories/GHSA...
x_refsource_CONFIRM
https://github.com/OISF/suricata/commit/1d6d331752e933c46...
x_refsource_MISC
https://github.com/OISF/suricata/commit/7fa88ea9e7d05e07a...
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

.
CVE-2025-53538 : Memory Management Vulnerability in Suricata by Open Information Security Foundation