CVE-2026-94055
exim4: Exim before 4.100.1, when certain non-default TLS settings are used with GnuTLS, has a use-after-free.
CVE-2026-94055 is fixed in 17 products on 1 platform, first by exim4 4.99.1-1ubuntu1.5, released September 19, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
5.3
medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0029
21st percentile
Exim before 4.100.1, when certain non-default TLS settings are used with GnuTLS, has a use-after-free.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| exim · Fedora 43 | 4.100.1-1.fc43 | FEDORA-2026-D202B74C6A | Oct 6, 2026 |
| exim-clamav · Fedora 43 | 4.100.1-1.fc43 | FEDORA-2026-D202B74C6A | Oct 6, 2026 |
| exim-debuginfo · Fedora 43 | 4.100.1-1.fc43 | FEDORA-2026-D202B74C6A | Oct 6, 2026 |
| exim-debugsource · Fedora 43 | 4.100.1-1.fc43 | FEDORA-2026-D202B74C6A | Oct 6, 2026 |
| exim-greylist · Fedora 43 | 4.100.1-1.fc43 | FEDORA-2026-D202B74C6A | Oct 6, 2026 |
| exim-mon · Fedora 43 | 4.100.1-1.fc43 | FEDORA-2026-D202B74C6A | Oct 6, 2026 |
| exim-mon-debuginfo · Fedora 43 | 4.100.1-1.fc43 | FEDORA-2026-D202B74C6A | Oct 6, 2026 |
| exim-mysql · Fedora 43 | 4.100.1-1.fc43 | FEDORA-2026-D202B74C6A | Oct 6, 2026 |
| exim-mysql-debuginfo · Fedora 43 | 4.100.1-1.fc43 | FEDORA-2026-D202B74C6A | Oct 6, 2026 |
| exim-pgsql · Fedora 43 | 4.100.1-1.fc43 | FEDORA-2026-D202B74C6A | Oct 6, 2026 |
| exim-pgsql-debuginfo · Fedora 43 | 4.100.1-1.fc43 | FEDORA-2026-D202B74C6A | Oct 6, 2026 |
| exim4 · Debian 14 | 4.100.1-1 | DEBIAN-CVE-2026-94055 | Sep 25, 2026 |
| exim4 · Ubuntu 26.04.1 LTS (resolute) | 4.99.1-1ubuntu1.5 | exim4 4.99.1-1ubuntu1.5 | Sep 19, 2026 |
| exim4-base · Ubuntu 26.04.1 LTS (resolute) | 4.99.1-1ubuntu1.5 | exim4-base 4.99.1-1ubuntu1.5 | Sep 19, 2026 |
| exim4-config · Ubuntu 26.04.1 LTS (resolute) | 4.99.1-1ubuntu1.5 | exim4-config 4.99.1-1ubuntu1.5 | Sep 19, 2026 |
| exim4-daemon-heavy · Ubuntu 26.04.1 LTS (resolute) | 4.99.1-1ubuntu1.5 | exim4-daemon-heavy 4.99.1-1ubuntu1.5 | Sep 19, 2026 |
| exim4-daemon-light · Ubuntu 26.04.1 LTS (resolute) | 4.99.1-1ubuntu1.5 | exim4-daemon-light 4.99.1-1ubuntu1.5 | Sep 19, 2026 |
| eximon4 · Ubuntu 26.04.1 LTS (resolute) | 4.99.1-1ubuntu1.5 | eximon4 4.99.1-1ubuntu1.5 | Sep 19, 2026 |
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