CVE-2024-20375

HIGH
7.5
CVSS Score
Published: August 21, 2024 at 05:02 PM UTC
Updated: June 17, 2026 at 07:06 AM UTC
1 product affected across 1 vendorUnified Communications Manager

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Severity
HIGH7.5
Exploit prediction
EPSS 0.7%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

12.0(1)SU112.0(1)SU212.0(1)SU312.0(1)SU412.0(1)SU512.0(1)su112.0(1)su212.0(1)su312.0(1)su412.0(1)su512.5(1)12.5(1)SU112.5(1)SU212.5(1)SU312.5(1)SU412.5(1)SU512.5(1)SU612.5(1)SU712.5(1)SU7a12.5(1)SU812.5(1)SU8a12.5(1)su112.5(1)su212.5(1)su312.5(1)su412.5(1)su512.5(1)su612.5(1)su712.5(1)su7a12.5(1)su812.5(1)su8a1414SU114SU214SU315

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-787

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