Vulnerability · Published Nov 24, 2025 · Assigned by mitre
CVE-2025-65502
Medium 4.3
In plain English
A medium-severity null pointer dereference in the swupdate package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 23% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)4.3Medium
Exploit odds (30 days)0.3%top 76.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | swupdate | no fix listed | DEBIAN-CVE-2025-65502 |
| Debian:13 | swupdate | no fix listed | DEBIAN-CVE-2025-65502 |
| Debian:14 | swupdate | 2025.12+dfsg-1 | DEBIAN-CVE-2025-65502 |
| Ubuntu:26.10 | mongoose | no fix listed | UBUNTU-CVE-2025-65502 |
| Ubuntu:22.04:LTS | swupdate | no fix listed | UBUNTU-CVE-2025-65502 |
| Ubuntu:24.04:LTS | swupdate | no fix listed | UBUNTU-CVE-2025-65502 |
| Ubuntu:25.10 | swupdate | no fix listed | UBUNTU-CVE-2025-65502 |
Affected products (as reported)
Weakness: CWE-476 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L