Linux · Security advisory · July 29, 2025
RLSA-2025:8756: thunderbird security update
RLSA-2025:8756, released July 29, 2025, fixes 13 CVEs in thunderbird (version 0:128.11.0-1.el8_10). None of them is reported as exploited. Patch Radar priority: High.
High
CVEs closed
13
None rated Critical
Exploited
0
None reported
Exploitation more likely
0
Vendor assessment
Highest EPSS
0.0952
95th percentile
Priority of the 13 CVEs
Patch now 0
Urgent 0
High 13
Routine 0
Fixed package versions
| Product | Release | Fixed in |
|---|---|---|
| thunderbird | rocky 8 | 0:128.11.0-1.el8_10 |
CVEs this fix closes
| Priority | CVE | Title | Impact | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|---|
| High | CVE-2025-4918 | Out-of-bounds access when resolving Promise objects | 9.8 | 0.0952 | None reported | |
| High | CVE-2025-4919 | Out-of-bounds access when optimizing linear sums | 8.8 | 0.0912 | None reported | |
| High | CVE-2025-5283 | Chromium: CVE-2025-5283 Use after free in libvpx | 8.8 | 0.0064 | None reported | |
| High | CVE-2025-5268 | Memory safety bugs fixed in Firefox 139, Thunderbird 139, Firefox ESR 128.11, and Thunderbird 128.11 | 8.8 | 0.0051 | None reported | |
| High | CVE-2025-5269 | Memory safety bug fixed in Firefox ESR 128.11 and Thunderbird 128.11 | 8.8 | 0.0048 | None reported | |
| High | CVE-2025-3909 | JavaScript Execution via Spoofed PDF Attachment and file:/// Link | 8.8 | 0.0047 | None reported | |
| High | CVE-2025-3875 | Sender Spoofing via Malformed From Header in Thunderbird | 8.8 | 0.0040 | None reported | |
| High | CVE-2025-3932 | Tracking Links in Attachments Bypassed Remote Content Blocking | 8.8 | 0.0039 | None reported | |
| High | CVE-2025-5266 | Script element events leaked cross-origin resource status | 8.8 | 0.0034 | None reported | |
| High | CVE-2025-5264 | Potential local code execution in “Copy as cURL” command | 8.8 | 0.0030 | None reported | |
| High | CVE-2025-5267 | Clickjacking vulnerability could have led to leaking saved payment card details | 8.8 | 0.0028 | None reported | |
| High | CVE-2025-5263 | Error handling for script execution was incorrectly isolated from web content | 8.8 | 0.0027 | None reported | |
| High | CVE-2025-3877 | thunderbird: Rejected reason: This CVE was marked as fixed, but due to other code landing - was not actually fixed | 8.8 | n/a | None reported |
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