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TI-2021-13701 Aliases CVE-2021-34701GHSA-2pf4-5wvc-pjgh

Cisco Unified Communications Products Path Traversal Vulnerability

Priority LOW 23CWE-22Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
Low · None · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-22 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01563 75th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
CiscoCisco Unity Connectionall versions—No fix listedCNA
  • Cisco Unity Connection VendorCisco Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:*:*:*:*before 14su1VulnerableCisco
cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:session_management:*:*:*before 14su1VulnerableCisco
cpe:2.3:a:cisco:unified_communications_manager_im_and_presence_service:*:*:*:*:*:*:*:*before 14su1VulnerableCisco
cpe:2.3:a:cisco:unity_connection:*:*:*:*:*:*:*:*before 14su1VulnerableCisco
  • cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:*:*:*:* Versions before 14su1 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:session_management:*:*:* Versions before 14su1 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:unified_communications_manager_im_and_presence_service:*:*:*:*:*:*:*:* Versions before 14su1 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:unity_connection:*:*:*:*:*:*:*:* Versions before 14su1 Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-34701
  2. 2026-10-03 Alias added: GHSA-2pf4-5wvc-pjgh

References

Patch 1

  • TI-2026-16259 Cisco Unified Communications Products Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2021-19919 Apache Log4j2 JNDI features do not protect against attacker controlled LDAP and other JNDI related endpoints KEVCVSS 3.1CRITICAL 10.0
  • TI-2026-16423 Cisco Unified Communications Manager Server-Side Request Forgery Vulnerability KEVCVSS 3.1HIGH 8.6
  • TI-2008-00019 Heap-based buffer overflow in the Certificate Trust List (CTL) Provider service… CVSS 2.0HIGH 10.0
  • TI-2013-05779 The TFTP service in Cisco Unified Communications Manager (aka CUCM or Unified CM) allows… CVSS 3.1HIGH 7.3
  • TI-2011-02932 Directory traversal vulnerability in Cisco Unified Communications Manager (CUCM) 5.x and… CVSS 2.0HIGH 7.8
See all 238 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences