Tenable Nessus 10.12.5 Fixes Nine Vulnerabilities
Tech GuruQuick Answer
The authority published TNS-2026-26 for Tenable Nessus 10.12.4 and earlier. Tenable released Nessus 10.12.5 to correct nine vulnerabilities spanning Low through Critical severity, including CVE-2026-103947 with an official CVSS v3.1 base score of 9.1. Affected deployments should be matched to the authority's exact scope and moved to the supported fixed release.
Confirm Scope And Apply The Supported Fix
What to do now: Inventory Tenable Nessus 10.12.4 and earlier, match the exact affected release or feature, apply the authority-supported fixed build or service remediation, validate the dependent workflow, and preserve evidence.
Last verified: 2026-10-02 UTC. Recheck the authoritative advisory and supported distribution channel before changing production.
Scope And Authority
| Product scope | Tenable Nessus 10.12.4 and earlier |
|---|---|
| Advisory | TNS-2026-26 |
| CVEs | CVE-2026-103946, CVE-2026-103947, CVE-2026-103948, CVE-2026-103950, CVE-2026-103951, CVE-2026-103952, CVE-2026-103953, CVE-2026-103954, CVE-2026-103955 |
| Authoritative release date | 2026-10-01 (Tenable date; no time stated) |
| Authority revision date | Initial publication; no later material revision stated when verified |
| Affected versions | Tenable Nessus 10.12.4 and earlier. |
| Fixed version | Tenable Nessus 10.12.5 |
| CVSS base score | 2.7–9.1 (official CVSS v3.1 range) |
| CVSS severity | Low to Critical |
| Exploitation status | Not stated by the authority; no exploitation claim is inferred. |
What Changed
Tenable released Nessus 10.12.5 to correct nine vulnerabilities spanning Low through Critical severity, including CVE-2026-103947 with an official CVSS v3.1 base score of 9.1.
What To Validate Now
- Inventory. Locate Tenable Nessus 10.12.4 and earlier deployments, versions, enabled features, exposure paths, owners, and dependent services.
- Establish applicability. Identify self-managed Nessus scanners and confirm whether the installed version is 10.12.4 or earlier. Do not infer scope for another Tenable product.
- Remediate. Install Tenable Nessus 10.12.5 through the supported update channel and follow current Tenable upgrade guidance.
- Validate. Confirm 10.12.5, validate scanner registration, credentials, plugin updates, scheduled scans, agents and integrations, monitor for regressions, and retain before-and-after evidence.
- 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
Use the exact supported release stream and repository. Test dependencies, clusters, integrations, and rollback before broad deployment; a CVSS rating or reachable feature is not evidence of exploitation.
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.
