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CVE-2026-15265

Tenable Nessus Agent remote code execution

9.1 CRITICALEPSS 0.56%
  1. Published14 Jul 2026

Description

A path traversal vulnerability in Tenable Agent 11.2.0 and 11.1.3 and lower allows a privileged attacker to write arbitrary files outside the intended plugin directory, potentially leading to remote code execution.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredHigh
User interactionNone
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Affected products

Tenable Nessus Agent< 11.1.4 · 11.2.0

Remediation

Fixed in
Tenable Nessus Agent≥ 11.1.4

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Frequently asked

Is CVE-2026-15265 being actively exploited?

CVE-2026-15265 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.56%.

How severe is CVE-2026-15265?

CVE-2026-15265 has a CVSS 3.1 base score of 9.1, rated critical. EPSS estimates a 0.56% probability of exploitation.

Which products are affected by CVE-2026-15265?

Affected products include Tenable Nessus Agent.

How do I fix CVE-2026-15265?

Upgrade affected software to a fixed version, for example Tenable Nessus Agent 11.1.4 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-15265 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.