CVE-2026-64879Network attack vector

Authenticated command execution via audit upload filename

Published Jul 21, 2026 · Updated Jul 21, 2026

OS command injection in Tenable Security Center 6.6.0 through 6.8.0 allows remote authenticated users to execute commands via audit uploads. The audit file upload path passes a user-supplied filename into system command execution without neutralizing shell metacharacters. Low-privileged network access is sufficient, and injected commands can compromise the host and interrupt the service.

CVSS severity9.4
Critical
EPSS probability2.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in Tenable Security Center 6.6.0 through 6.8.0 allows remote authenticated users to execute commands via audit uploads. The audit file upload path passes a user-supplied filename into system command execution without neutralizing shell metacharacters. Low-privileged network access is sufficient, and injected commands can compromise the host and interrupt the service.

The record

CVE
CVE-2026-64879
Published
Jul 21, 2026
Updated
Jul 21, 2026
Vendor
Tenable
Product
Tenable Security Center
Classifications
CWE-78, T1059.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 21, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Tenable · Tenable Security CenterAffected versions are unavailable in this record.

Published CVSS scores

8.9TenableCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C
9.9TenableCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
9.0NVDAV:N/AC:L/Au:S/C:C/I:C/A:C
9.4TenableCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059.004Unix Shell

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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