CVE-2025-65502 Null dereference in n/a
Remote attackers can cause denial of service in Cesanta Mongoose via TLS initialization when SSL_CTX_get_cert_store returns NULL.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2025-65502?
CVE-2025-65502 is a medium-severity vulnerability in Cesanta Mongoose, published on 24 Nov 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Null pointer dereference in add_ca_certs() in Cesanta Mongoose before 7.2 allows remote attackers to cause a denial of service via TLS initialization where SSL_CTX_get_cert_store() returns NULL.
Weakness: CWE-476
Which versions are affected by CVE-2025-65502?
It affects 1 product.
Products include Cesanta Mongoose.
How do I fix CVE-2025-65502?
Upgrade to a fixed version.
Is CVE-2025-65502 being exploited?
There is no known exploitation of CVE-2025-65502 in the wild and no public exploit code.
Other vulnerabilities in Cesanta Mongoose
Sources
Also known as DEBIAN-CVE-2025-65502, GHSA-hp7w-j9mx-8vpj, UBUNTU-CVE-2025-65502.