Red Hat Updates Wireshark on RHEL 8 for Four Vulnerabilities
Tech GuruQuick Answer
Red Hat published RHSA-2026:83657 for Wireshark on Red Hat Enterprise Linux 8 AppStream and CRB, covering 4 CVEs. Match the entitled deployment to the advisory's exact packages or image digests, apply wireshark and wireshark-cli 2.6.2-21.el8_10 for the applicable RHEL 8 architecture, validate dependent workloads and rollback readiness, and retain evidence.
Confirm Scope And Apply The Supported Remediation
What to do now: Inventory Wireshark on Red Hat Enterprise Linux 8 AppStream and CRB deployments, owners, versions, release channels, packages or container digests, and dependent workloads; apply wireshark and wireshark-cli 2.6.2-21.el8_10 for the applicable RHEL 8 architecture; confirm the resulting content; and validate representative service and recovery paths.
Last verified: 2026-10-16 UTC. Recheck the authoritative advisory and supported distribution channel before changing production.
Scope And Authority
| Product scope | Wireshark on Red Hat Enterprise Linux 8 AppStream and CRB |
|---|---|
| Advisory | RHSA-2026:83657 |
| CVEs | CVE-2026-76880, CVE-2026-76886, CVE-2026-76919, CVE-2026-76927 |
| Authoritative release date | 2026-10-15 21:36:23 UTC |
| Authority revision date | 2026-10-15 23:41:10 UTC |
| Affected versions | The supported Wireshark on Red Hat Enterprise Linux 8 AppStream and CRB content before the advisory-listed fixed release, packages, or image digests; CVE applicability varies by component and deployment. |
| Fixed version | wireshark and wireshark-cli 2.6.2-21.el8_10 for the applicable RHEL 8 architecture |
| CVSS base score | Up to 6.5 (CVSS v3.1) |
| CVSS severity | Medium |
| Exploitation status | Not stated by the authority; no exploitation claim is inferred. |
What Changed
Red Hat published 1 Wireshark security advisory covering 4 CVEs and branch-specific fixed content.
What To Validate Now
- Inventory. Locate Wireshark on Red Hat Enterprise Linux 8 AppStream and CRB deployments, versions, enabled features, exposure paths, owners, and dependent services.
- Establish applicability. Compare each deployment with the authority's affected-version statement: The supported Wireshark on Red Hat Enterprise Linux 8 AppStream and CRB content before the advisory-listed fixed release, packages, or image digests; CVE applicability varies by component and deployment. Do not infer applicability from product family or severity alone.
- Remediate. Apply wireshark and wireshark-cli 2.6.2-21.el8_10 for the applicable RHEL 8 architecture through the supported vendor or project channel, following the current advisory and change-control requirements.
- Validate. Confirm the resulting version or managed-service state, exercise representative functionality and recovery paths, monitor for regressions, and document exceptions.
- 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
Do not infer that every listed CVE affects every package, image, architecture, or enabled feature. Use Red Hat's entitled release channel and advisory-specific content, and follow the supported update sequence for clustered or operator-managed deployments. Preserve the authority snapshot, asset and owner records, before-and-after versions, change approval, installation output, validation results, exceptions, and rollback evidence.
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.
