Linux · Security advisory · June 5, 2025

RHSA-2025:8607: thunderbird security update

RHSA-2025:8607, released June 5, 2025, fixes 9 CVEs in thunderbird (version 0:128.11.0-1.el9_6). None of them is reported as exploited. Patch Radar priority: High.

High
CVEs closed
9
None rated Critical
Exploited
0
None reported
Exploitation more likely
0
Vendor assessment
Highest EPSS
0.0952
95th percentile

Priority of the 9 CVEs

Patch now 0 Urgent 0 High 9 Routine 0

Fixed package versions

ProductReleaseFixed in
thunderbirdRHEL 90:128.11.0-1.el9_6

CVEs this fix closes

PriorityCVETitleImpactCVSSEPSSExploitation
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-2025-5266 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
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