CVE-2025-64333 — Stack-based Buffer Overflow in Suricata

CWE-121 — Stack-based Buffer OverflowCWE-787 — Out-of-bounds Write5 documents5 sources
Severity
7.5HIGHNVD
EPSS
0.1%
top 79.31%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Oisf Suricata
Timeline
PublishedNov 26

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.

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< 8.0.2+1
▶NVDoisf/suricata8.0.0 — 8.0.2+1
▶Debianoisf/suricata< 1:7.0.10-1+deb13u2+1

🔴Vulnerability Details

2
OSV
CVE-2025-64333: Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community↗2025-11-26
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CVEList
Suricata is vulnerable to a stack overflow from big content-type↗2025-11-26
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📋Vendor Advisories

2
Red Hat
Suricata: Suricata: Stack Overflow Vulnerability via Large HTTP Content Type Logging↗2025-11-26
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Debian
CVE-2025-64333: suricata - Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Inform...↗2025
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CVE-2025-64333 — Stack-based Buffer Overflow | cvebase