CVE-2022-20708
Cisco Small Business RV Series Routers Stack-based Buffer Overflow Vulnerability
Cisco Small Business RV160, RV260, RV340, and RV345 Series Routers
Multiple vulnerabilities in Cisco Small Business RV160, RV260, RV340, and RV345 Series Routers could allow an attacker to do any of the following: Execute arbitrary code Elevate privileges Execute arbitrary commands Bypass authentication and authorization protections Fetch and run unsigned software Cause denial of service (DoS) For more information about these vulnerabilities, see the Details section of this advisory.
Exploitation status
CISA Known Exploited Vulnerabilities
Listed by CISA on 3 March 2022. US federal agencies were required to remediate it by 17 March 2022.
EPSS — exploitation probability
FIRST puts the probability of exploitation activity in the next 30 days at 14.9%, which is higher than 96.6% of all scored vulnerabilities. EPSS is a forecast of activity, not a measure of severity, and it is rescored daily.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Frequently asked questions
Is CVE-2022-20708 being exploited by ransomware groups?
No ransomware group in this database is currently recorded as exploiting CVE-2022-20708.
What does CVE-2022-20708 affect?
CVE-2022-20708 affects Cisco Small Business RV160, RV260, RV340, and RV345 Series Routers. Multiple vulnerabilities in Cisco Small Business RV160, RV260, RV340, and RV345 Series Routers could allow an attacker to do any of the following: Execute arbitrary code Elevate privileges Execute arbitrary commands Bypass authentication and authorization protections Fetch and run unsigned software Cause denial of service (DoS) For more information about these vulnerabilities, see the Details section of this advisory.
How severe is CVE-2022-20708?
CVE-2022-20708 is rated CRITICAL with a CVSS base score of 10. EPSS puts the probability of exploitation in the next 30 days at 14.9%, higher than 96.6% of all scored vulnerabilities. It is listed in the CISA Known Exploited Vulnerabilities catalog, with a federal remediation deadline of 17 March 2022.
How should organisations respond to CVE-2022-20708?
Apply the vendor patch for Cisco Small Business RV160, RV260, RV340, and RV345 Series Routers as the first priority, and treat any internet-facing instance as the most urgent. Because this vulnerability is associated with ransomware activity, also review whether the affected systems were reachable before patching, rather than assuming that patching alone closes the incident.