CVE-2025-6536 Tarantool datetime.c tm_to_datetime assertion
A local attacker can trigger a reachable assertion in Tarantool's datetime library, causing a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-6536?
CVE-2025-6536 is a medium-severity denial of service vulnerability in Tarantool, published on 24 Jun 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability has been found in Tarantool up to 3.3.1 and classified as problematic. Affected by this vulnerability is the function tm_to_datetime in the library src/lib/core/datetime.c. The manipulation leads to reachable assertion. Attacking locally is a requirement. The exploit has been disclosed to the public and may be used.
Weakness: CWE-617
Which versions are affected by CVE-2025-6536?
How do I fix CVE-2025-6536?
No fix has been published for CVE-2025-6536 yet. Limit exposure of the affected software until one is available.
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-2025-6536 being exploited?
There is no known exploitation of CVE-2025-6536 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2025-6536, GHSA-ggxx-wp4v-h599, UBUNTU-CVE-2025-6536.