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TI-2021-01205 Aliases CVE-2021-1478GHSA-5248-64jc-4p36

Cisco Unified Communications Manager Denial of Service Vulnerability

Priority LOW 37CWE-284Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-284.

Summary

A vulnerability in the Java Management Extensions (JMX) component 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 cause a denial of service (DoS) condition on an affected system. This vulnerability is due to an unsecured TCP/IP port. An attacker could exploit this vulnerability by accessing the port and restarting the JMX process. A successful exploit could allow the attacker to cause a DoS condition on an affected system.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01015 63rd 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
Yes
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 · 3

CPEVersionsRoleVendor
cpe:2.3:a:cisco:hosted_collaboration_mediation_fulfillment:*:*:*:*:*:*:*:*before 12.6VulnerableCisco
cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:-:*:*:*before 12.6VulnerableCisco
cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:session_management:*:*:*before 12.6VulnerableCisco
  • cpe:2.3:a:cisco:hosted_collaboration_mediation_fulfillment:*:*:*:*:*:*:*:* Versions before 12.6 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:-:*:*:* Versions before 12.6 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:session_management:*:*:* Versions before 12.6 Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-1478
  2. 2026-10-03 Alias added: GHSA-5248-64jc-4p36

References

Advisory 1

  • TI-2017-04533 Resource management flaw in Multiple Cisco Products unknown CVSS 3.0HIGH 7.5
  • TI-2016-05459 Directory traversal vulnerability in the web interface in Cisco Hosted Collaboration… CVSS 3.0HIGH 7.5
  • TI-2020-02686 Cisco Hosted Collaboration Mediation Fulfillment Cross-Site Request Forgery Vulnerability CVSS 3.1MEDIUM 6.5
  • TI-2018-10961 Cisco Hosted Collaboration Mediation Fulfillment Cross-Site Request Forgery Vulnerability CVSS 3.0MEDIUM 6.5
  • TI-2016-05536 Cross-site request forgery in Cisco Hosted Collaboration Mediation Fulfillment before 11.5 CVSS 3.0MEDIUM 6.5
  • TI-2020-02816 Cisco Hosted Collaboration Mediation Fulfillment XML External Expansion Vulnerability CVSS 3.1MEDIUM 4.9
See all 7 →

Sources

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