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CVE PROGRAM SOURCE RECORD7.5 High

CVE-2026-20281

Cisco Desk Phone 9800 Series, IP Phone 7800 and 8800 Series, and Video Phone 8875 with SIP Software Denial of Service Vulnerability

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Status
Published
Published
Updated
Assigning organization
cisco

Description

A vulnerability in Cisco Desk Phone 9800 Series, Cisco IP Phone 7800 and 8800 Series, and Cisco Video Phone 8875 that are running Cisco Session Initiation Protocol (SIP) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper memory management when an affected device processes HTTP packets. An attacker could exploit this vulnerability by sending a continuous stream of crafted HTTP packets to the device. A successful exploit could allow the attacker to cause the affected device to continuously consume memory, resulting in a DoS condition. A manual reboot of the device is required to recover from this condition. Note: For this vulnerability to be exploitable, the phone must be registered to Cisco Unified Communications Manager (Unified CM) and have Web Access enabled. Web Access is disabled by default.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Cisco Cisco Session Initiation Protocol (SIP) Software

Default version status: unknown

  • 12.1(1)SR1affected
  • 11.5(1)affected
  • 10.3(2)affected
  • 10.2(2)affected
  • 10.3(1)affected
  • 10.3(1)SR4affected
  • 11.0(1)affected
  • 10.4(1)SR2 3rd Partyaffected
  • 11.7(1)affected
  • 12.1(1)affected
  • 11.0(0.7) MPPaffected
  • 9.3(4) 3rd Partyaffected
  • 12.5(1)SR2affected
  • 10.2(1)SR1affected
  • 9.3(4)SR3 3rd Partyaffected
  • 10.2(1)affected
  • 12.5(1)affected
  • 10.3(1)SR2affected
  • 11-0-1MSR1-1affected
  • 10.4(1) 3rd Partyaffected
  • 12.5(1)SR1affected
  • 11.5(1)SR1affected
  • 10.1(1)SR2affected
  • 12.0(1)SR2affected
  • 12.6(1)affected
  • 10.3(1.11) 3rd Partyaffected
  • 12.0(1)affected
  • 12.0(1)SR1affected
  • 9.3(3)affected
  • 12.5(1)SR3affected
  • 10.3(1)SR4baffected
  • 9.3(4)SR1 3rd Partyaffected
  • 10.3(1)SR5affected
  • 10.1(1.9)affected
  • 10.3(1.9) 3rd Partyaffected
  • 9.3(4)SR2 3rd Partyaffected
  • 10.3(1)SR1affected
  • 10.3(1)SR3affected
  • 10.1(1)SR1affected
  • 12.0(1)SR3affected
  • 12.6(1)SR1affected
  • 12.7(1)affected
  • 10.3(1)SR6affected
  • 12.8(1)affected
  • 12.7(1)SR1affected
  • 11.0(2)SR1affected
  • 11.0(4)affected
  • 11.0(2)affected
  • 11.0(4)SR3affected
  • 11.0(5)affected
  • 11.0(3)SR2affected
  • 11.0(3)SR4affected
  • 11.0(3)SR3affected
  • 11.0(2)SR2affected
  • 11.0(4)SR1affected
  • 11.0(5)SR3affected
  • 11.0(3)affected
  • 11.0(5)SR2affected
  • 11.0(3)SR6affected
  • 11.0(5)SR1affected
  • 11.0(4)SR2affected
  • 11.0(3)SR1affected
  • 11.0(3)SR5affected
  • 11.0(6)affected
  • 12.8(1)SR1affected
  • 12.8(1)SR2affected
  • 14.0(1)affected
  • 14.0(1)SR1affected
  • 11.0(6)SR1affected
  • 10.3(1)SR7affected
  • 14.0(1)SR2affected
  • 14.1(1)affected
  • 14.0(1)SR3affected
  • 11.0(6)SR2affected
  • 14.1(1)SR1affected
  • 14.1(1)SR2affected
  • 11.0(6)SR4affected
  • 14.2(1)affected
  • 14.2(1)SR1affected
  • 11.0(6)SR5affected
  • 14.1(1)SR3affected
  • 14.2(1)SR2affected
  • 3.1(1)affected
  • 3.0(1)affected
  • 2.3(1)affected
  • 2.3(1)SR1affected
  • 2.2(1)affected
  • 2.1(1)affected
  • 2.0(1)affected
  • 14.2(1)SR3affected
  • 3.1(1)SR1affected
  • 14.3(1)affected
  • 3.2(1)affected
  • 14.3(1)SR1affected
  • 14.2(1)SR4affected
  • 3.3(1)affected
  • 11.0(6)SR6affected
  • 14.3(1)SR2affected
  • 3.4(1)affected
  • 14.3(1)SR3affected
  • 3.5(1)affected
  • 11.0(6)SR7affected
  • 3.5(1)SR1affected
  • 14.4(1)affected
  • 3.6(1)affected
  • 4.0(1)affected
  • 14.4(1)SR1affected
  • 4.1(1)affected
  • 14.4(1)SR2affected
  • 4.1(1)SR1affected

References