CVE-2025-64332

Unknown Unknown - Not Provided

BaseFortify

Publication date: 2025-11-26

Last updated on: 2025-12-05

Assigner: GitHub, Inc.

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 stack overflow that causes Suricata to crash can occur if SWF decompression is enabled. This issue has been patched in versions 7.0.13 and 8.0.2. A workaround for this issue involves disabling SWF decompression (swf-decompression in suricata.yaml), it is disabled by default; set decompress-depth to lower than half your stack size if swf-decompression must be enabled.

CVSS Scores

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Meta Information

Published

2025-11-26

Last Modified

2025-12-05

Generated

2026-07-06

AI Q&A

2025-11-27

EPSS Evaluated

2026-07-05

NVD

CVE-2025-64332

Affected Vendors & Products

Vendor	Product	Version / Range
oisf	suricata	to 7.0.13 (exc)
oisf	suricata	From 8.0.0 (inc) to 8.0.2 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-121	A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
CWE-787	The product writes data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

Executive Summary

This vulnerability is a stack overflow in Suricata that occurs when SWF decompression is enabled. It can cause Suricata to crash. The issue affects versions prior to 7.0.13 and 8.0.2 and has been patched in those versions. A workaround is to disable SWF decompression or limit the decompress-depth setting.

Impact Analysis

The vulnerability can cause Suricata to crash, leading to denial of service in network intrusion detection and prevention operations. This can reduce the effectiveness of network security monitoring and potentially leave the network unprotected during the crash.

Detection Guidance

This vulnerability can be detected by checking if your Suricata installation has SWF decompression enabled and is running a vulnerable version prior to 7.0.13 or 8.0.2. You can verify the Suricata version by running the command: `suricata --build-info`. To check if SWF decompression is enabled, inspect the suricata.yaml configuration file for the 'swf-decompression' setting. Additionally, monitoring Suricata logs for crashes or stack overflow errors related to SWF decompression may indicate the presence of this vulnerability.

Mitigation Strategies

To mitigate this vulnerability immediately, upgrade Suricata to version 7.0.13 or 8.0.2 or later where the issue is patched. If upgrading is not possible immediately, disable SWF decompression by setting 'swf-decompression' to false in the suricata.yaml configuration file. If SWF decompression must remain enabled, set 'decompress-depth' to a value lower than half your stack size to reduce the risk of stack overflow.

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