Vulnerability in Cisco iOS
CVE-2022-20920
A vulnerability in the SSH implementation of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated, remote attacker to cause an affected device to reload. This vulnerability is due to improper handling of resources during an exceptional situation. An attacker could exploit this vulnerability by continuously connecting to an affected device and sending specific SSH requests. A successful exploit could allow the attacker to cause the affected device to reload.
EPSS: 0.009 (55.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H.
Affected products
- Cisco Ios — versions n/a
- Cisco Ios — versions 15.6\(2\)sp7, 15.2(4)ec2, 15.2(4)jb1
- Cisco Ios_xe — versions 3.2.0se, 3.2.1se, 3.2.2se
Weakness classification (CWE)
Public proof-of-concept exploits
References
- psirt@cisco.com (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2022-20920?
- CVE-2022-20920 is a high-severity vulnerability in Cisco iOS, classified under Improper Handling of Exceptional Conditions. CVSS score: 7.7/10. Published 2022-10-10.
- How severe is CVE-2022-20920?
- High severity. CVSS v3 base score is 7.7 out of 10.
- Is CVE-2022-20920 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.