Unrated severityNVD Advisory· Published Nov 26, 2025· Updated Nov 28, 2025
Suricata is vulnerable to a stack overflow from big content-type
CVE-2025-64333
Description
Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community. Prior to versions 7.0.13 and 8.0.2, a large HTTP content type, when logged can cause a stack overflow crashing Suricata. This issue has been patched in versions 7.0.13 and 8.0.2. A workaround for this issue involves limiting stream.reassembly.depth to less then half the stack size. Increasing the process stack size makes it less likely the bug will trigger.
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Affected products
3Patches
Vulnerability mechanics
References
1- github.com/OISF/suricata/security/advisories/GHSA-537h-xxmx-v87mmitrex_refsource_CONFIRM
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