CVE-2025-59149 Suricata: Stack buffer overflow in rule parser when processing long keywords with transforms
A stack buffer overflow in Suricata's rule parser allows attackers to cause denial of service or execute code via crafted rules with long keywords and transforms.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-59149?
CVE-2025-59149 is a medium-severity memory corruption vulnerability in Oisf Suricata, published on 1 Oct 2025. It can only be exploited from the same machine or local network, 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 version 8.0.0, rules using keyword ldap.responses.attribute_type (which is long) with transforms can lead to a stack buffer overflow during Suricata startup or during a rule reload. This issue is fixed in version 8.0.1. To workaround this issue, users can disable rules with ldap.responses.attribute_type and transforms.
Weakness: CWE-121
Which versions are affected by CVE-2025-59149?
It affects 1 product.
Products include Oisf Suricata.
How do I fix CVE-2025-59149?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-59149 being exploited?
There is no known exploitation of CVE-2025-59149 in the wild and no public exploit code.
Other vulnerabilities in Oisf Suricata
Sources
Also known as GHSA-vxcg-38x4-gj7j, UBUNTU-CVE-2025-59149.