Red Hat Thunderbird 140.15 Updates Address Thirteen RHEL Vulnerabilities
Tech GuruQuick Answer
Red Hat published RHSA-2026:77631 and RHSA-2026:77627 and RHSA-2026:77632 for Thunderbird on RHEL 10.0 EUS and RHEL 9.4 or 9.2 Update Services for SAP Solutions. Inventory the exact affected scope, apply Thunderbird 140.15.0-1.el10_0, 140.15.0-1.el9_4, or 140.15.0-1.el9_2 for the matching entitled branch, validate dependent operations, and preserve change evidence.
Validate Thunderbird Scope And Apply The Supported Fix
What to do now: Inventory Thunderbird on RHEL 10.0 EUS and RHEL 9.4 or 9.2 Update Services for SAP Solutions, match versions and enabled features to the authority's scope, apply supported remediation, validate representative operations, and document exceptions.
Last verified: 2026-10-08 UTC. Recheck the authoritative advisory and supported distribution channel before changing production.
Scope And Authority
| Product scope | Thunderbird on RHEL 10.0 EUS and RHEL 9.4 or 9.2 Update Services for SAP Solutions |
|---|---|
| Advisory | RHSA-2026:77631 / RHSA-2026:77627 / RHSA-2026:77632 |
| CVEs | CVE-2026-16365, CVE-2026-75874, CVE-2026-84119, CVE-2026-84120, CVE-2026-84121, CVE-2026-84122, CVE-2026-84124, CVE-2026-84131, CVE-2026-84143, CVE-2026-84145, CVE-2026-84639, CVE-2026-84640, CVE-2026-84641 |
| Authoritative release date | 2026-10-08 07:08:03 UTC |
| Authority revision date | 2026-10-08 12:01:26 UTC |
| Affected versions | The exact entitled Thunderbird on RHEL 10.0 EUS and RHEL 9.4 or 9.2 Update Services for SAP Solutions branches and package or image relationships identified by RHSA-2026:77631 and RHSA-2026:77627 and RHSA-2026:77632; compare installed NEVRAs or digests with the fixed content. |
| Fixed version | Thunderbird 140.15.0-1.el10_0, 140.15.0-1.el9_4, or 140.15.0-1.el9_2 for the matching entitled branch |
| CVSS base score | 3.4 / 6.1 / 7.5 (CVSS v3.1) |
| CVSS severity | Low to High |
| Exploitation status | Not stated by the authority; no exploitation claim is inferred. |
What Changed
Red Hat published authority-rated Important Thunderbird security content with branch-specific fixed packages or images for the listed CVEs.
What To Validate Now
- Inventory. Locate Thunderbird on RHEL 10.0 EUS and RHEL 9.4 or 9.2 Update Services for SAP Solutions; record versions, enabled features, exposure paths, owners, dependencies, support channels, and maintenance groups.
- Establish applicability. Compare every deployment with the authority's affected statement: The exact entitled Thunderbird on RHEL 10.0 EUS and RHEL 9.4 or 9.2 Update Services for SAP Solutions branches and package or image relationships identified by RHSA-2026:77631 and RHSA-2026:77627 and RHSA-2026:77632; compare installed NEVRAs or digests with the fixed content. Do not infer applicability from product family, CVSS, or Internet reachability alone.
- Remediate. Apply Thunderbird 140.15.0-1.el10_0, 140.15.0-1.el9_4, or 140.15.0-1.el9_2 for the matching entitled branch through the authority-supported channel and follow the current advisory.
- Validate. Confirm the resulting Thunderbird build or managed state, exercise representative services and recovery paths, monitor for regressions, and retain the result.
- Retain evidence. Preserve asset and owner identifiers, the applicability decision, before-and-after versions, change approval, installation output, validation results, and any exception or rollback record.
Operational Cautions
Follow the entitled Red Hat repository and verify package or image relationships for the exact supported branch. Preserve pre-change state, installation output, logs, validation evidence, and rollback decisions.
Evidence To Retain
- Exact product, release stream, package or application version, enabled feature, environment, and accountable owner.
- UTC timestamps, authority revision, approved change record, installer or package-manager output, and resulting version.
- Relevant logs and monitoring evidence, test results, exceptions, compensating controls, and rollback decisions.
Related TechGeeks Resources
Authoritative References
Correction policy: If the authority changes affected versions, fixed versions, severity, exploitation information, mitigations, or required action, TechGeeks will update this notice and its verification date.
