CVE-2025-64335 Suricata is vulnerable to a null deref when used with base64_data
Attackers can cause a denial of service in Suricata by triggering a null dereference when specific rules using entropy and base64_data are processed.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-64335?
CVE-2025-64335 is a high-severity 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. In versions from 8.0.0 to before 8.0.2, a NULL dereference can occur when the entropy keyword is used in conjunction with base64_data. This issue has been patched in version 8.0.2. A workaround involves disabling rules that use entropy in conjunction with base64_data.
Weakness: CWE-476
Which versions are affected by CVE-2025-64335?
It affects 1 product.
Products include Oisf Suricata.
How do I fix CVE-2025-64335?
Upgrade to a fixed version.
Is CVE-2025-64335 being exploited?
There is no known exploitation of CVE-2025-64335 in the wild and no public exploit code.
Other vulnerabilities in Oisf Suricata
Sources
Also known as DEBIAN-CVE-2025-64335, GHSA-v299-h7p3-q4f2, UBUNTU-CVE-2025-64335.