Linux · 
Ubuntu · Package update · May 15, 2026
Ubuntu · Package update · May 15, 2026exim4-base 4.98.2-1ubuntu2.1: exim4-base 4.98.2-1ubuntu2.1 for Ubuntu 25.10 (questing)
exim4-base 4.98.2-1ubuntu2.1, released May 15, 2026, fixes 3 CVEs in exim4-base. None of them is reported as exploited. Patch Radar priority: Urgent. The product is no longer supported.
UrgentUnsupported product
CVEs closed
3
1 rated Critical
Exploited
0
None reported
Highest CVSS
9.8
Base score, 0 to 10
Highest EPSS
0.0037
31st percentile
Priority of the 3 CVEs
Patch now 0
Urgent 1
High 1
Routine 1
Fixed package versions
| Product | Release | Fixed in |
|---|---|---|
| exim4-base | Ubuntu 25.10 (questing) | 4.98.2-1ubuntu2.1 |
CVEs this fix closes
| Priority | CVE | Title | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|
| Urgent | CVE-2026-40687 | exim4: In Exim before 4.99.2, when the SPA authentication driver is used with an adversarial SPA resource, there can be an o... | 9.1 | 0.0037 | None reported |
| High | CVE-2026-40685 | exim4-daemon-heavy: In Exim before 4.99.2, when JSON lookup is enabled, an out-of-bounds heap write can occur when a JSON operator encoun... | 9.8 | 0.0032 | None reported |
| Routine | CVE-2026-40686 | exim4: In Exim before 4.99.2, when utf8 operators are enabled, there is an out-of-bounds read if large UTF-8 trailing charac... | 5.3 | 0.0025 | None reported |
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