CVE-2022-20968
HIGH
8.8
CVSS Score
Published: December 8, 2022 at 04:13 PM UTC
Updated: June 17, 2026 at 04:25 AM UTC
27 products affected across 1 vendorIP Phone 8861 FirmwareIP Phone 8865 FirmwareIP Phone 8811 Firmware
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Severity
HIGH8.8
Exploit prediction
EPSS 6%
Description
A vulnerability in the Cisco Discovery Protocol processing feature of Cisco IP Phone 7800 and 8800 Series firmware could allow an unauthenticated, adjacent attacker to cause a stack overflow on an affected device. This vulnerability is due to insufficient input validation of received Cisco Discovery Protocol packets. An attacker could exploit this vulnerability by sending crafted Cisco Discovery Protocol traffic to an affected device. A successful exploit could allow the attacker to cause a stack overflow, resulting in possible remote code execution or a denial of service (DoS) condition on an affected device.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
10.1(1)sr110.1(1)sr210.1(1.9)10.2(1)10.2(1)sr110.2(2)10.3(1)10.3(1)sr110.3(1)sr210.3(1)sr310.3(1)sr410.3(1)sr4b10.3(1)sr510.3(1)sr610.3(1)sr710.3(1.11)10.3(1.9)10.3(2)10.4(1)10.4(1)sr211-0-1msr1-111.0(0.7)11.0(1)11.5(1)11.5(1)sr111.7(1)12.0(1)12.0(1)sr112.0(1)sr212.0(1)sr312.1(1)12.1(1)sr112.5(1)12.5(1)sr112.5(1)sr212.5(1)sr312.6(1)12.6(1)sr112.7(1)12.7(1)sr112.8(1)12.8(1)sr112.8(1)sr214.0(1)14.0(1)sr114.0(1)sr214.0(1)sr314.1(1)14.1(1)sr19.3(3)9.3(4)9.3(4)sr19.3(4)sr29.3(4)sr3
cisco-ip-phone-7811 (same device)
10.1(1)sr110.1(1)sr210.1(1.9)10.2(1)10.2(1)sr110.2(2)10.3(1)10.3(1)sr110.3(1)sr210.3(1)sr310.3(1)sr410.3(1)sr4b10.3(1)sr510.3(1)sr610.3(1)sr710.3(1.11)10.3(1.9)10.3(2)10.4(1)10.4(1)sr211-0-1msr1-111.0(0.7)11.0(1)11.5(1)11.5(1)sr111.7(1)12.0(1)12.0(1)sr112.0(1)sr212.0(1)sr312.1(1)12.1(1)sr112.5(1)12.5(1)sr112.5(1)sr212.5(1)sr312.6(1)12.6(1)sr112.7(1)12.7(1)sr112.8(1)12.8(1)sr112.8(1)sr214.0(1)14.0(1)sr114.0(1)sr214.0(1)sr314.1(1)14.1(1)sr19.3(3)9.3(4)9.3(4)sr19.3(4)sr29.3(4)sr3
cisco-ip-phone-7821 (same device)
10.1(1)sr110.1(1)sr210.1(1.9)10.2(1)10.2(1)sr110.2(2)10.3(1)10.3(1)sr110.3(1)sr210.3(1)sr310.3(1)sr410.3(1)sr4b10.3(1)sr510.3(1)sr610.3(1)sr710.3(1.11)10.3(1.9)10.3(2)10.4(1)10.4(1)sr211-0-1msr1-111.0(0.7)11.0(1)11.5(1)11.5(1)sr111.7(1)12.0(1)12.0(1)sr112.0(1)sr212.0(1)sr312.1(1)12.1(1)sr112.5(1)12.5(1)sr112.5(1)sr212.5(1)sr312.6(1)12.6(1)sr112.7(1)12.7(1)sr112.8(1)12.8(1)sr112.8(1)sr214.0(1)14.0(1)sr114.0(1)sr214.0(1)sr314.1(1)14.1(1)sr19.3(3)9.3(4)9.3(4)sr19.3(4)sr29.3(4)sr3
cisco-ip-phone-7832 (same device)
10.1(1)sr110.1(1)sr210.1(1.9)10.2(1)10.2(1)sr110.2(2)10.3(1)10.3(1)sr110.3(1)sr210.3(1)sr310.3(1)sr410.3(1)sr4b10.3(1)sr510.3(1)sr610.3(1)sr710.3(1.11)10.3(1.9)10.3(2)10.4(1)10.4(1)sr211-0-1msr1-111.0(0.7)11.0(1)11.5(1)11.5(1)sr111.7(1)12.0(1)12.0(1)sr112.0(1)sr212.0(1)sr312.1(1)12.1(1)sr112.5(1)12.5(1)sr112.5(1)sr212.5(1)sr312.6(1)12.6(1)sr112.7(1)12.7(1)sr112.8(1)12.8(1)sr112.8(1)sr214.0(1)14.0(1)sr114.0(1)sr214.0(1)sr314.1(1)14.1(1)sr19.3(3)9.3(4)9.3(4)sr19.3(4)sr29.3(4)sr3
cisco-ip-phone-7841 (same device)
10.1(1)sr110.1(1)sr210.1(1.9)10.2(1)10.2(1)sr110.2(2)10.3(1)10.3(1)sr110.3(1)sr210.3(1)sr310.3(1)sr410.3(1)sr4b10.3(1)sr510.3(1)sr610.3(1)sr710.3(1.11)10.3(1.9)10.3(2)10.4(1)10.4(1)sr211-0-1msr1-111.0(0.7)11.0(1)11.5(1)11.5(1)sr111.7(1)12.0(1)12.0(1)sr112.0(1)sr212.0(1)sr312.1(1)12.1(1)sr112.5(1)12.5(1)sr112.5(1)sr212.5(1)sr312.6(1)12.6(1)sr112.7(1)12.7(1)sr112.8(1)12.8(1)sr112.8(1)sr214.0(1)14.0(1)sr114.0(1)sr214.0(1)sr314.1(1)14.1(1)sr19.3(3)9.3(4)9.3(4)sr19.3(4)sr29.3(4)sr3
cisco-ip-phone-7861 (same device)
10.1(1)sr110.1(1)sr210.1(1.9)10.2(1)10.2(1)sr110.2(2)10.3(1)10.3(1)sr110.3(1)sr210.3(1)sr310.3(1)sr410.3(1)sr4b10.3(1)sr510.3(1)sr610.3(1)sr710.3(1.11)10.3(1.9)10.3(2)10.4(1)10.4(1)sr211-0-1msr1-111.0(0.7)11.0(1)11.5(1)11.5(1)sr111.7(1)12.0(1)12.0(1)sr112.0(1)sr212.0(1)sr312.1(1)12.1(1)sr112.5(1)12.5(1)sr112.5(1)sr212.5(1)sr312.6(1)12.6(1)sr112.7(1)12.7(1)sr112.8(1)12.8(1)sr112.8(1)sr214.0(1)14.0(1)sr114.0(1)sr214.0(1)sr314.1(1)14.1(1)sr19.3(3)9.3(4)9.3(4)sr19.3(4)sr29.3(4)sr3
cisco-ip-phone-8811 (same device)
10.1(1)sr110.1(1)sr210.1(1.9)10.2(1)10.2(1)sr110.2(2)10.3(1)10.3(1)sr110.3(1)sr210.3(1)sr310.3(1)sr410.3(1)sr4b10.3(1)sr510.3(1)sr610.3(1)sr710.3(1.11)10.3(1.9)10.3(2)10.4(1)10.4(1)sr211-0-1msr1-111.0(0.7)11.0(1)11.5(1)11.5(1)sr111.7(1)12.0(1)12.0(1)sr112.0(1)sr212.0(1)sr312.1(1)12.1(1)sr112.5(1)12.5(1)sr112.5(1)sr212.5(1)sr312.6(1)12.6(1)sr112.7(1)12.7(1)sr112.8(1)12.8(1)sr112.8(1)sr214.0(1)14.0(1)sr114.0(1)sr214.0(1)sr314.1(1)14.1(1)sr19.3(3)9.3(4)9.3(4)sr19.3(4)sr29.3(4)sr3
cisco-ip-phone-8831 (same device)
10.1(1)sr110.1(1)sr210.1(1.9)10.2(1)10.2(1)sr110.2(2)10.3(1)10.3(1)sr110.3(1)sr210.3(1)sr310.3(1)sr410.3(1)sr4b10.3(1)sr510.3(1)sr610.3(1)sr710.3(1.11)10.3(1.9)10.3(2)10.4(1)10.4(1)sr211-0-1msr1-111.0(0.7)11.0(1)11.5(1)11.5(1)sr111.7(1)12.0(1)12.0(1)sr112.0(1)sr212.0(1)sr312.1(1)12.1(1)sr112.5(1)12.5(1)sr112.5(1)sr212.5(1)sr312.6(1)12.6(1)sr112.7(1)12.7(1)sr112.8(1)12.8(1)sr112.8(1)sr214.0(1)14.0(1)sr114.0(1)sr214.0(1)sr314.1(1)14.1(1)sr19.3(3)9.3(4)9.3(4)sr19.3(4)sr29.3(4)sr3
cisco-ip-phone-8832 (same device)
10.1(1)sr110.1(1)sr210.1(1.9)10.2(1)10.2(1)sr110.2(2)10.3(1)10.3(1)sr110.3(1)sr210.3(1)sr310.3(1)sr410.3(1)sr4b10.3(1)sr510.3(1)sr610.3(1)sr710.3(1.11)10.3(1.9)10.3(2)10.4(1)10.4(1)sr211-0-1msr1-111.0(0.7)11.0(1)11.5(1)11.5(1)sr111.7(1)12.0(1)12.0(1)sr112.0(1)sr212.0(1)sr312.1(1)12.1(1)sr112.5(1)12.5(1)sr112.5(1)sr212.5(1)sr312.6(1)12.6(1)sr112.7(1)12.7(1)sr112.8(1)12.8(1)sr112.8(1)sr214.0(1)14.0(1)sr114.0(1)sr214.0(1)sr314.1(1)14.1(1)sr19.3(3)9.3(4)9.3(4)sr19.3(4)sr29.3(4)sr3
cisco-ip-phone-8841 (same device)
10.1(1)sr110.1(1)sr210.1(1.9)10.2(1)10.2(1)sr110.2(2)10.3(1)10.3(1)sr110.3(1)sr210.3(1)sr310.3(1)sr410.3(1)sr4b10.3(1)sr510.3(1)sr610.3(1)sr710.3(1.11)10.3(1.9)10.3(2)10.4(1)10.4(1)sr211-0-1msr1-111.0(0.7)11.0(1)11.5(1)11.5(1)sr111.7(1)12.0(1)12.0(1)sr112.0(1)sr212.0(1)sr312.1(1)12.1(1)sr112.5(1)12.5(1)sr112.5(1)sr212.5(1)sr312.6(1)12.6(1)sr112.7(1)12.7(1)sr112.8(1)12.8(1)sr112.8(1)sr214.0(1)14.0(1)sr114.0(1)sr214.0(1)sr314.1(1)14.1(1)sr19.3(3)9.3(4)9.3(4)sr19.3(4)sr29.3(4)sr3
cisco-ip-phone-8845 (same device)
Remediation
No guide yetNo remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.
CVSS
- Attack Vector
- ADJACENT_NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-787
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