CVE-2026-64881: CWE-78 Improper neutralization of special elements used in an OS command ('OS command injection') in Tenable, Inc. Security Center
The audit file upload handler does not sanitize filenames, allowing shell metacharacters to flow into system command execution. This input validation failure enables command injection when chained with a related vulnerability.
AI Analysis
Technical Summary
This vulnerability involves improper neutralization of special elements used in OS commands (CWE-78) within the audit file upload handler of Tenable Security Center. Specifically, filenames are not sanitized, enabling shell metacharacters to be injected into system commands. This flaw can be exploited to execute arbitrary commands on the affected system if chained with another vulnerability. The CVSS 3.1 score is 8.8, indicating high impact on confidentiality, integrity, and availability. No official remediation or patch information is currently available, and the product is not a cloud service.
Potential Impact
Successful exploitation could allow an attacker with limited privileges to execute arbitrary OS commands on the host running Tenable Security Center. This can lead to full compromise of the system, including unauthorized disclosure, modification, or destruction of data and disruption of service.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to the audit file upload functionality to trusted users only and monitor for suspicious activity related to file uploads. Avoid chaining this vulnerability with other weaknesses by applying general security best practices.
CVE-2026-64881: CWE-78 Improper neutralization of special elements used in an OS command ('OS command injection') in Tenable, Inc. Security Center
Description
The audit file upload handler does not sanitize filenames, allowing shell metacharacters to flow into system command execution. This input validation failure enables command injection when chained with a related vulnerability.
CVSS v3.1
Score 8.8high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves improper neutralization of special elements used in OS commands (CWE-78) within the audit file upload handler of Tenable Security Center. Specifically, filenames are not sanitized, enabling shell metacharacters to be injected into system commands. This flaw can be exploited to execute arbitrary commands on the affected system if chained with another vulnerability. The CVSS 3.1 score is 8.8, indicating high impact on confidentiality, integrity, and availability. No official remediation or patch information is currently available, and the product is not a cloud service.
Potential Impact
Successful exploitation could allow an attacker with limited privileges to execute arbitrary OS commands on the host running Tenable Security Center. This can lead to full compromise of the system, including unauthorized disclosure, modification, or destruction of data and disruption of service.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to the audit file upload functionality to trusted users only and monitor for suspicious activity related to file uploads. Avoid chaining this vulnerability with other weaknesses by applying general security best practices.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- tenable
- Date Reserved
- 2026-07-20T19:19:24.798Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a5fdc239c2644c7f8ba04e6
Added to database: 07/21/2026, 20:52:51 UTC
Last enriched: 07/30/2026, 03:54:00 UTC
Last updated: 09/02/2026, 22:52:13 UTC
Views: 69
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