Linux · 
Red Hat · Security advisory · October 20, 2025
Red Hat · Security advisory · October 20, 2025RHSA-2025:18321: thunderbird security update
RHSA-2025:18321, released October 20, 2025, fixes 7 CVEs in thunderbird (version 0:140.4.0-2.el9_6). None of them is reported as exploited. Patch Radar priority: High.
High
CVEs closed
7
None rated Critical
Exploited
0
None reported
Highest CVSS
9.8
Base score, 0 to 10
Highest EPSS
0.0051
43rd percentile
Priority of the 7 CVEs
Patch now 0
Urgent 0
High 7
Routine 0
Fixed package versions
| Product | Release | Fixed in |
|---|---|---|
| thunderbird | RHEL 9 | 0:140.4.0-2.el9_6 |
CVEs this fix closes
| Priority | CVE | Title | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|
| High | CVE-2025-11708 | Use-after-free in MediaTrackGraphImpl::GetInstance() | 9.8 | 0.0051 | None reported |
| High | CVE-2025-11709 | Out of bounds read/write in a privileged process triggered by WebGL textures | 9.8 | 0.0042 | None reported |
| High | CVE-2025-11710 | Cross-process information leaked due to malicious IPC messages | 9.8 | 0.0042 | None reported |
| High | CVE-2025-11714 | Memory safety bugs fixed in Firefox ESR 115.29, Firefox ESR 140.4, Thunderbird ESR 140.4, Firefox 144 and Thunderbird 144 | 8.8 | 0.0034 | None reported |
| High | CVE-2025-11715 | Memory safety bugs fixed in Firefox ESR 140.4, Thunderbird ESR 140.4, Firefox 144 and Thunderbird 144 | 8.8 | 0.0033 | None reported |
| High | CVE-2025-11711 | Some non-writable Object properties could be modified | 7.5 | 0.0023 | None reported |
| High | CVE-2025-11712 | An OBJECT tag type attribute overrode browser behavior on web resources without a content-type | 7.5 | 0.0022 | None reported |
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