CVE-2025-53538 — Uncontrolled Resource Consumption in Suricata

CWE-400 — Uncontrolled Resource ConsumptionCWE-770 — Allocation of Resources Without Limits or Throttling4 documents4 sources
Severity
7.5HIGHNVD
EPSS
0.1%
top 71.39%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Oisf Suricata
Timeline
PublishedJul 22

Description

Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community. In versions 7.0.10 and below and 8.0.0-beta1 through 8.0.0-rc1, mishandling of data on HTTP2 stream 0 can lead to uncontrolled memory usage, leading to loss of visibility. Workarounds include disabling the HTTP/2 parser, and using a signature like drop http2 any any -> any any (frame:http2.hdr; byte_test:1,=,0,3; byte_test:4,=,0,5; sid: 1;) where the first byte t…

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages3 packages

▶CVEListV5oisf/suricata< 7.0.11+1
▶NVDoisf/suricata< 7.0.11+1
▶Debianoisf/suricata< 1:7.0.10-1+deb13u1+1

Patches

Patch: github.com ↗Patch: github.com ↗Patch: github.com ↗

🔴Vulnerability Details

2
CVEList
Suricata's mishandling of data on HTTP2 stream 0 can lead to resource starvation↗2025-07-22
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OSV
CVE-2025-53538: Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community↗2025-07-22
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📋Vendor Advisories

1
Debian
CVE-2025-53538: suricata - Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Inform...↗2025
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CVE-2025-53538 — Uncontrolled Resource Consumption | cvebase