Linux · 
Ubuntu · Package update · April 15, 2026
Ubuntu · Package update · April 15, 2026libssl1.0.0 1.0.2n-1ubuntu5.13+esm4: libssl1.0.0 1.0.2n-1ubuntu5.13+esm4 for Ubuntu 18.04.6 LTS (bionic)
libssl1.0.0 1.0.2n-1ubuntu5.13+esm4, released April 15, 2026, fixes 3 CVEs in libssl1.0.0. None of them is reported as exploited. Patch Radar priority: High. The product is no longer supported.
HighUnsupported product
CVEs closed
3
None rated Critical
Exploited
0
None reported
Highest CVSS
7.5
Base score, 0 to 10
Highest EPSS
0.0092
60th percentile
Priority of the 3 CVEs
Patch now 0
Urgent 0
High 3
Routine 0
Fixed package versions
| Product | Release | Fixed in |
|---|---|---|
| libssl1.0.0 | Ubuntu 18.04.6 LTS (bionic) | 1.0.2n-1ubuntu5.13+esm4 |
CVEs this fix closes
| Priority | CVE | Title | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|
| High | CVE-2026-28388 | NULL Pointer Dereference When Processing a Delta CRL | 7.5 | 0.0092 | None reported |
| High | CVE-2026-28389 | Possible NULL Dereference When Processing CMS KeyAgreeRecipientInfo | 7.5 | 0.0084 | None reported |
| High | CVE-2026-28390 | Possible NULL Dereference When Processing CMS KeyTransportRecipientInfo | 7.5 | 0.0084 | None reported |
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