Linux · 
Ubuntu · Package update · September 19, 2026
Ubuntu · Package update · September 19, 2026exim4-base 4.99.1-1ubuntu1.5: exim4-base 4.99.1-1ubuntu1.5 for Ubuntu 26.04.1 LTS (resolute)
exim4-base 4.99.1-1ubuntu1.5, released September 19, 2026, fixes 4 CVEs in exim4-base. None of them is reported as exploited. Patch Radar priority: High.
High
CVEs closed
4
None rated Critical
Exploited
0
None reported
Highest CVSS
7.5
Base score, 0 to 10
Highest EPSS
0.0029
21st percentile
Priority of the 4 CVEs
Patch now 0
Urgent 0
High 1
Routine 3
Fixed package versions
| Product | Release | Fixed in |
|---|---|---|
| exim4-base | Ubuntu 26.04.1 LTS (resolute) | 4.99.1-1ubuntu1.5 |
CVEs this fix closes
| Priority | CVE | Title | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|
| High | CVE-2026-94056 | exim4: Exim before 4.100.1, when Proxy-Protocol is used with an attacker-controlled proxy, allows attackers to read certain... | 7.5 | 0.0024 | None reported |
| Routine | CVE-2026-94055 | exim4: Exim before 4.100.1, when certain non-default TLS settings are used with GnuTLS, has a use-after-free. | 5.3 | 0.0029 | None reported |
| Routine | CVE-2026-94054 | exim4: Exim before 4.100.1, when Proxy-Protocol is used with an attacker-controlled proxy, has an out-of-bounds write. | 5.3 | 0.0027 | None reported |
| Routine | CVE-2026-94057 | exim4: Exim before 4.100.1 allows SMTP smuggling in which the received message does not match any sent message, and instead... | 5.3 | 0.0020 | None reported |
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