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TI-2024-13308 Aliases CVE-2024-20375GHSA-2v3w-9hfq-fx33

Out-of-bounds write in Cisco Unified Communications Manager

Priority LOW 39CWE-787Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

A vulnerability in the SIP call processing function of Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper parsing of SIP messages. An attacker could exploit this vulnerability by sending a crafted SIP message to an affected Cisco Unified CM or Cisco Unified CM SME device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition that interrupts the communications of reliant voice and video devices.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00745 55th 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 Manager12.0(1)SU1; 12.0(1)SU2; 12.0(1)SU3; 12.0(1)SU4; 12.0(1)SU5; 12.5(1); 12.5(1)SU1; 12.5(1)SU2; 12.5(1)SU3; 12.5(1)SU4; 12.5(1)SU5; 12.5(1)SU6; 12.5(1)SU7; 12.5(1)SU7a; 12.5(1)SU8; 12.5(1)SU8a; 14; 14SU1; 14SU2; 14SU3; 15—No fix listedCNA
  • Cisco Unified Communications Manager VendorCisco Affected 12.0(1)SU1; 12.0(1)SU2; 12.0(1)SU3; 12.0(1)SU4; 12.0(1)SU5; 12.5(1); 12.5(1)SU1; 12.5(1)SU2; 12.5(1)SU3; 12.5(1)SU4; 12.5(1)SU5; 12.5(1)SU6; 12.5(1)SU7; 12.5(1)SU7a; 12.5(1)SU8; 12.5(1)SU8a; 14; 14SU1; 14SU2; 14SU3; 15 Fixed in — No fix listed CNA

CPE configurations NVD · 16

CPEVersionsRoleVendor
cpe:2.3:a:cisco:unified_communications_manager:12.0\(1\)su1:*:*:*:*:*:*:*12.0(1)su1VulnerableCisco
cpe:2.3:a:cisco:unified_communications_manager:12.0\(1\)su2:*:*:*:*:*:*:*12.0(1)su2VulnerableCisco
cpe:2.3:a:cisco:unified_communications_manager:12.0\(1\)su3:*:*:*:*:*:*:*12.0(1)su3VulnerableCisco
cpe:2.3:a:cisco:unified_communications_manager:12.0\(1\)su4:*:*:*:*:*:*:*12.0(1)su4VulnerableCisco
cpe:2.3:a:cisco:unified_communications_manager:12.0\(1\)su5:*:*:*:*:*:*:*12.0(1)su5VulnerableCisco
cpe:2.3:a:cisco:unified_communications_manager:12.5\(1\):*:*:*:*:*:*:*12.5(1)VulnerableCisco
cpe:2.3:a:cisco:unified_communications_manager:12.5\(1\)su1:*:*:*:*:*:*:*12.5(1)su1VulnerableCisco
cpe:2.3:a:cisco:unified_communications_manager:12.5\(1\)su2:*:*:*:*:*:*:*12.5(1)su2VulnerableCisco
cpe:2.3:a:cisco:unified_communications_manager:12.5\(1\)su3:*:*:*:*:*:*:*12.5(1)su3VulnerableCisco
cpe:2.3:a:cisco:unified_communications_manager:12.5\(1\)su4:*:*:*:*:*:*:*12.5(1)su4VulnerableCisco
  • cpe:2.3:a:cisco:unified_communications_manager:12.0\(1\)su1:*:*:*:*:*:*:* Versions 12.0(1)su1 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:unified_communications_manager:12.0\(1\)su2:*:*:*:*:*:*:* Versions 12.0(1)su2 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:unified_communications_manager:12.0\(1\)su3:*:*:*:*:*:*:* Versions 12.0(1)su3 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:unified_communications_manager:12.0\(1\)su4:*:*:*:*:*:*:* Versions 12.0(1)su4 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:unified_communications_manager:12.0\(1\)su5:*:*:*:*:*:*:* Versions 12.0(1)su5 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:unified_communications_manager:12.5\(1\):*:*:*:*:*:*:* Versions 12.5(1) Vulnerable ·Cisco
  • cpe:2.3:a:cisco:unified_communications_manager:12.5\(1\)su1:*:*:*:*:*:*:* Versions 12.5(1)su1 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:unified_communications_manager:12.5\(1\)su2:*:*:*:*:*:*:* Versions 12.5(1)su2 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:unified_communications_manager:12.5\(1\)su3:*:*:*:*:*:*:* Versions 12.5(1)su3 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:unified_communications_manager:12.5\(1\)su4:*:*:*:*:*:*:* Versions 12.5(1)su4 Vulnerable ·Cisco
Show 6 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:cisco:unified_communications_manager:12.5\(1\)su5:*:*:*:*:*:*:*12.5(1)su5VulnerableCisco
cpe:2.3:a:cisco:unified_communications_manager:12.5\(1\)su6:*:*:*:*:*:*:*12.5(1)su6VulnerableCisco
cpe:2.3:a:cisco:unified_communications_manager:12.5\(1\)su7:*:*:*:*:*:*:*12.5(1)su7VulnerableCisco
cpe:2.3:a:cisco:unified_communications_manager:12.5\(1\)su7a:*:*:*:*:*:*:*12.5(1)su7aVulnerableCisco
cpe:2.3:a:cisco:unified_communications_manager:12.5\(1\)su8:*:*:*:*:*:*:*12.5(1)su8VulnerableCisco
cpe:2.3:a:cisco:unified_communications_manager:12.5\(1\)su8a:*:*:*:*:*:*:*12.5(1)su8aVulnerableCisco
  • cpe:2.3:a:cisco:unified_communications_manager:12.5\(1\)su5:*:*:*:*:*:*:* Versions 12.5(1)su5 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:unified_communications_manager:12.5\(1\)su6:*:*:*:*:*:*:* Versions 12.5(1)su6 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:unified_communications_manager:12.5\(1\)su7:*:*:*:*:*:*:* Versions 12.5(1)su7 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:unified_communications_manager:12.5\(1\)su7a:*:*:*:*:*:*:* Versions 12.5(1)su7a Vulnerable ·Cisco
  • cpe:2.3:a:cisco:unified_communications_manager:12.5\(1\)su8:*:*:*:*:*:*:* Versions 12.5(1)su8 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:unified_communications_manager:12.5\(1\)su8a:*:*:*:*:*:*:* Versions 12.5(1)su8a Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-20375
  2. 2026-10-03 Alias added: GHSA-2v3w-9hfq-fx33

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