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TI-2021-01126 Aliases CVE-2021-1399GHSA-wpj5-cw66-j932

Cisco Unified Communications Manager Self Care Portal Authorization Bypass Vulnerability

Priority LOW 21CWE-302Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

A vulnerability in the Self Care Portal of Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) could allow an authenticated, remote attacker to modify data on an affected system without proper authorization. The vulnerability is due to insufficient validation of user-supplied data to the Self Care Portal. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected system. A successful exploit could allow the attacker to modify information without proper authorization.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00637 50th 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 Unified Communications Managerall versions—No fix listedCNA
  • Cisco Unified Communications Manager VendorCisco Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:-:*:*:*10.5\(2\) to before 12.5\(1\)su4VulnerableCisco
cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:session_management:*:*:*10.5\(2\) to before 12.5\(1\)su4VulnerableCisco
  • cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:-:*:*:* Versions 10.5\(2\) to before 12.5\(1\)su4 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:session_management:*:*:* Versions 10.5\(2\) to before 12.5\(1\)su4 Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-1399
  2. 2026-10-03 Alias added: GHSA-wpj5-cw66-j932
  3. 2026-10-28 EPSS moved to the 50th–90th percentile

References

Advisory 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