Cisco Nexus Dashboard up to 4.2.1 path traversal

Summaryinfo

A vulnerability was found in Cisco Nexus Dashboard. It has been declared as very critical. Affected by this vulnerability is an unknown functionality. The manipulation results in path traversal. This vulnerability is known as CVE-2026-76409. It is possible to launch the attack remotely. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Cisco Nexus Dashboard. It has been classified as very critical. Affected is some unknown processing. The manipulation with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Nexus Dashboard engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-76409 are related to improper limitation of a pathname issues that are grouped under the Common Weakness Enumeration (CWE) CWE-22.

The advisory is available at sec.cloudapps.cisco.com. This vulnerability is traded as CVE-2026-76409 since 08/19/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 09/16/2026). This vulnerability is assigned to T1006 by the MITRE ATT&CK project.

Upgrading eliminates this vulnerability.

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Productinfo

Type

• Forum Software

Vendor

• Cisco

Name

• Nexus Dashboard

Version

• 2.1(1d)
• 2.1(1e)
• 2.1(2d)
• 2.1(2f)
• 2.2(1e)
• 2.2(1h)
• 2.2(2d)
• 2.3(1c)
• 2.3(2b)
• 2.3(2c)
• 2.3(2d)
• 2.3(2e)
• 3.0(1f)
• 3.0(1i)
• 3.1(1k)
• 3.1(1l)
• 3.1(1n)
• 3.2(1e)
• 3.2(1i)
• 3.2(2f)
• 3.2(2g)
• 3.2(2m)
• 3.3(1a)
• 3.3(1b)
• 3.3(2b)
• 3.3(2g)
• 4.0(1i)
• 4.1(1g)
• 4.2.1

License

• commercial

Website

• Vendor: https://www.cisco.com/

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CPE 2.2info

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