Linux
opensmtpd security updates
Patch Radar has 8 security fixes for opensmtpd, closing 5 CVEs, 1 of which is being exploited. The newest is opensmtpd 6.6.4p1-1 (6.6.4p1-1), released January 16, 2026.
1 exploited CVEs
Latest version
n/a
Release date not known
Security fixes
8
On record in Patch Radar
CVEs
5
Closed by those fixes
Exploited
1
Vendor report or CISA KEV
Security fixes, newest first
| Priority | Fix | Release | Fixed in | CVEs | Exploited | Released |
|---|---|---|---|---|---|---|
| High | opensmtpd 6.6.4p1-1 | Ubuntu 25.04 (plucky) | 6.6.4p1-1 | 2 | Jan 16, 2026 | |
| High | opensmtpd 6.6.4p1-1 | Ubuntu 24.10 (oracular) | 6.6.4p1-1 | 2 | Jan 16, 2026 | |
| Routine | DEBIAN-CVE-2025-62875 | Debian 14 | 7.8.0p0-1 | 1 | Nov 20, 2025 | |
| High | DEBIAN-CVE-2023-29323 | Debian 13.5 (trixie) | 7.3.0p1-1 | 1 | Apr 4, 2023 | |
| High | DEBIAN-CVE-2023-29323 | Debian 14 | 7.3.0p1-1 | 1 | Apr 4, 2023 | |
| High | opensmtpd 6.0.3p1-1ubuntu0.2 | Ubuntu 18.04.6 LTS (bionic) | 6.0.3p1-1ubuntu0.2 | 2 | Feb 25, 2020 | |
| High | opensmtpd 6.6.4p1-1 | Ubuntu 20.04 LTS (focal) | 6.6.4p1-1 | 2 | Feb 25, 2020 | |
| Patch now | opensmtpd 6.0.3p1-1ubuntu0.1 | Ubuntu 18.04.6 LTS (bionic) | 6.0.3p1-1ubuntu0.1 | 1 | 1 | Jan 29, 2020 |