CVE-2025-65502

MEDIUM
Published Nov 24, 2025 Modified Dec 12, 2025 CWE-476

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.

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CVSS v3.1 Score

4.3
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

Weakness Type (CWE)

CWE-476 CWE-476

Affected Products

Vendor Product
cesanta mongoose

References

Frequently Asked Questions

What is CVE-2025-65502? +
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. It has a CVSS v3.1 base score of 4.3 (MEDIUM).
How severe is CVE-2025-65502? +
CVE-2025-65502 has a CVSS v3.1 score of 4.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.
What products are affected by CVE-2025-65502? +
CVE-2025-65502 affects products from cesanta, specifically: mongoose. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2025-65502? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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