What is CVE-2024-32663?

CVE-2024-32663 is a high-severity vulnerability in Oisf Suricata, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2024-05-07.

How severe is CVE-2024-32663?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2024-32663 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Resource exhaustion in Oisf Suricata

CVE-2024-32663

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 7.0.5 and 6.0.19, a small amount of HTTP/2 traffic can lead to Suricata using a large amount of memory. The issue has been addressed in Suricata 7.0.5 and 6.0.19. Workarounds include disabling the HTTP/2 parser and reducing `app-layer.protocols.http2.max-table-size` value (default is 65536).

Vulnerability class: DoS (Denial of Service)

Published 2024-05-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.010 (59.9th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 59.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Oisf Suricata — versions >= 7.0.0, <= 7.0.4, >= 6.0.0, <= 6.0.18

Weakness classification (CWE)

Public proof-of-concept exploits

References

github.com/OISF/suricata/security/advisories/GHSA-9jxm-qw9v-266r (Vendor Advisory)
github.com/OISF/suricata/commit/08d93f7c3762781b743f88f9fdc4389eb9c3eb64 (Patch)
github.com/OISF/suricata/commit/c0af92295e833d1db29b184d63cd3b829451d7fd (Patch)
github.com/OISF/suricata/commit/d24b37a103c04bb2667e449e080ba4c8e56bb019 (Patch)
github.com/OISF/suricata/commit/e68ec4b227d19498f364a41eb25d3182f0383ca5 (Patch)
redmine.openinfosecfoundation.org/issues/6892 (Issue Tracking)
redmine.openinfosecfoundation.org/issues/6900 (Issue Tracking)
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2024-32663?: CVE-2024-32663 is a high-severity vulnerability in Oisf Suricata, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2024-05-07.
How severe is CVE-2024-32663?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2024-32663 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.