Vulnerability · Published Oct 4, 2025 · Assigned by mitre
CVE-2025-61962
Medium 5.9
In plain English
A medium-severity security flaw in fetchmail from fetchmail. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 35% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)5.9Medium
Exploit odds (30 days)0.4%top 64.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
In fetchmail before 6.5.6, the SMTP client can crash when authenticating upon receiving a 334 status code in a malformed context.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.23 | fetchmail | 6.5.6-r0 | ALPINE-CVE-2025-61962 |
| Alpine:v3.24 | fetchmail | 6.5.6-r0 | ALPINE-CVE-2025-61962 |
| Debian:12 | fetchmail | no fix listed | DEBIAN-CVE-2025-61962 |
| Debian:13 | fetchmail | no fix listed | DEBIAN-CVE-2025-61962 |
| Debian:14 | fetchmail | 6.5.6-1 | DEBIAN-CVE-2025-61962 |
| Ubuntu:22.04:LTS | fetchmail | 6.4.27-1ubuntu0.1 | USN-7838-1 |
| Ubuntu:22.04:LTS | fetchmail | 6.4.27-1ubuntu0.1 | UBUNTU-CVE-2025-61962 |
| Ubuntu:24.04:LTS | fetchmail | 6.4.38-1ubuntu4.1 | UBUNTU-CVE-2025-61962 |
| Ubuntu:24.04:LTS | fetchmail | 6.4.38-1ubuntu4.1 | USN-7838-1 |
| Ubuntu:25.10 | fetchmail | 6.5.4-0ubuntu2 | UBUNTU-CVE-2025-61962 |
| Ubuntu:26.04:LTS | fetchmail | 6.5.4-0ubuntu2 | UBUNTU-CVE-2025-61962 |
Affected products (as reported)
Weakness: CWE-142 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H