CVE-2025-0696 Null dereference in Frozen
An attacker can crash applications using the Cesanta Frozen library by sending malicious JSON, causing a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-0696?
CVE-2025-0696 is a medium-severity vulnerability in Cesanta Frozen, published on 27 Jan 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A NULL Pointer Dereference vulnerability in Cesanta Frozen versions less than 1.7 allows an attacker to induce a crash of the component embedding the library by supplying a maliciously crafted JSON as input.
Weakness: CWE-476
Which versions are affected by CVE-2025-0696?
How do I fix CVE-2025-0696?
No fix has been published for CVE-2025-0696 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-0696 being exploited?
There is no known exploitation of CVE-2025-0696 in the wild and no public exploit code.
Sources
Also known as GHSA-j86m-4332-jm3w.