CVE-2025-61962: fetchmail
Vulnerability summary
CVE-2025-61962 is a medium (CVSS 5.9) vulnerability in fetchmail. EPSS estimates a 0.41% chance of exploitation in the next 30 days, higher than 35.1% of scored vulnerabilities.
Not severe (CVSS 5.9, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Timeline
- 04-10-2025PublishedVulnerability first disclosed.
- 04-11-2025Last modifiedVulnerability information updated.
Description
In fetchmail before 6.5.6, the SMTP client can crash when authenticating upon receiving a 334 status code in a malformed context.
CVSS metrics
5 scores · 5 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated5.9MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.9MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVDNIST5.9MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · AlpineEcosystem advisory · calculated5.9MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.41%
Chance of exploitation in the next 30 days
Percentile
35%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.41% on 04-10-2026
Known exploited
Compare KEV catalogsNot in the CISA KEV catalog.
Not in the ENISA CNW catalog.
Not in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Suse7 products
- fetchmail&distro=SUSE Linux Enterprise Module for Basesystem 15 SP6< 6.4.22-150600.35.3.1
- fetchmail&distro=SUSE Linux Enterprise Module for Basesystem 15 SP7< 6.4.22-150600.35.3.1
- fetchmail&distro=SUSE Linux Enterprise Module for Desktop Applications 15 SP6< 6.4.22-150600.35.3.1
- fetchmail&distro=SUSE Linux Enterprise Module for Desktop Applications 15 SP7< 6.4.22-150600.35.3.1
- fetchmail&distro=SUSE Linux Enterprise Server 16.0< 6.5.2-160000.3.1
Opensuse3 products
- fetchmail&distro=openSUSE Leap 15.6< 6.4.22-150600.35.3.1
- fetchmail&distro=openSUSE Leap 16.0< 6.5.2-160000.3.1
- fetchmail&distro=openSUSE Tumbleweed< 6.5.6-1.1
Alpine1 product
- fetchmail< 6.5.6-r0
Debian1 product
- fetchmailAll versions (No fix recorded) | < 6.5.6-1
Fetchmail1 product
- fetchmail≥ 5.9.9, < 6.5.6
Mageia1 product
- fetchmail< 6.5.6-1.mga9
Ubuntu1 product
- fetchmailAll versions (No fix recorded) | < 6.5.4-0ubuntu2 | < 6.4.27-1ubuntu0.1 | < 6.4.38-1ubuntu4.1
7 vendors · 15 products