CVE-2025-64332 Suricata is vulnerable to a stack overflow on larger compressed data
Attackers can crash Suricata via stack overflow when processing large compressed SWF data if decompression is enabled.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-64332?
CVE-2025-64332 is a high-severity denial of service vulnerability in Oisf Suricata, published on 26 Nov 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Which versions are affected by CVE-2025-64332?
It affects 1 product.
Products include Oisf Suricata.
How do I fix CVE-2025-64332?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-64332 being exploited?
There is no known exploitation of CVE-2025-64332 in the wild and no public exploit code.
Other vulnerabilities in Oisf Suricata
Sources
Also known as DEBIAN-CVE-2025-64332, GHSA-p32q-7wcp-gv92, UBUNTU-CVE-2025-64332.