CVE-2022-20968
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (6.10%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 6.10% probability · 93th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- cisco/ip phone 7811 firmware · cisco/ip phone 7821 firmware · cisco/ip phone 7832 firmware · cisco/ip phone 7841 firmware · cisco/ip phone 7861 firmware · cisco/ip phone 8811 firmware · cisco/ip phone 8831 firmware · cisco/ip phone 8832 firmware · cisco/ip phone 8841 firmware · cisco/ip phone 8845 firmware · cisco/ip phone 8851 firmware · cisco/ip phone 8861 firmware · cisco/ip phone 8865 firmware
- Source
- psirt@cisco.com
References
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.