CVE-2021-34701 Cisco Unified Communications Products Path Traversal Vulnerability
An authenticated attacker can exploit a path traversal flaw in the web interface to access sensitive files on Cisco Unified Communications systems.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-34701?
CVE-2021-34701 is a medium-severity path traversal vulnerability in Cisco Unified Communications Manager, published on 4 Nov 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability in the web-based management interface of Cisco Unified Communications Manager (Unified CM), Cisco Unified Communications Manager Session Management Edition (Unified CM SME), Cisco Unified Communications Manager IM & Presence Service (Unified CM IM&P), and Cisco Unity Connection could allow an authenticated, remote attacker to access sensitive data on an affected device. This vulnerability exists because the web-based management interface does not properly validate user-supplied input. An attacker could exploit this vulnerability by sending a crafted HTTP request that contains directory traversal character sequences to an affected system. A successful exploit could allow the attacker to access sensitive files on the affected system.
Weakness: CWE-22
Which versions are affected by CVE-2021-34701?
It affects 3 products.
Products include Cisco Unified Communications Manager, Cisco Unified Communications Manager Im and Presence Service, Cisco Unity Connection.
How do I fix CVE-2021-34701?
No fix has been published for CVE-2021-34701 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2021-34701 being exploited?
There is no known exploitation of CVE-2021-34701 in the wild and no public exploit code.
Other vulnerabilities in Cisco Unified Communications Manager
- CVE-2026-20230 Cisco Unified Communications Manager Server-Side Request Forgery (SSRF)
- CVE-2026-20045 Cisco Unified Communications Products Code Injection
- CVE-2025-20309 Cisco Unified Communications Manager Static SSH Credentials Vulnerability
- CVE-2011-1643 Information disclosure in n/a
- CVE-2024-20253 Deserialization in Cisco Packaged Contact Center Enterprise
Sources
Also known as GHSA-2pf4-5wvc-pjgh.