CVE-2019-1652
Cisco Small Business Routers Improper Input Validation Vulnerability
Cisco Small Business RV320 and RV325 Dual Gigabit WAN VPN Routers
A vulnerability in the web-based management interface of Cisco Small Business RV320 and RV325 Dual Gigabit WAN VPN Routers could allow an authenticated, remote attacker with administrative privileges on an affected device to execute arbitrary commands. The vulnerability is due to improper validation of user-supplied input. An attacker could exploit this vulnerability by sending malicious HTTP POST requests to the web-based management interface of an affected device. A successful exploit could allow the attacker to execute arbitrary commands on the underlying Linux shell as root. Cisco has released firmware updates that address this vulnerability.
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 95.9%, which is higher than 99.9% 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:H/UI:N/S:U/C:H/I:H/A:H
Frequently asked questions
Is CVE-2019-1652 being exploited by ransomware groups?
No ransomware group in this database is currently recorded as exploiting CVE-2019-1652.
What does CVE-2019-1652 affect?
CVE-2019-1652 affects Cisco Small Business RV320 and RV325 Dual Gigabit WAN VPN Routers. A vulnerability in the web-based management interface of Cisco Small Business RV320 and RV325 Dual Gigabit WAN VPN Routers could allow an authenticated, remote attacker with administrative privileges on an affected device to execute arbitrary commands. The vulnerability is due to improper validation of user-supplied input. An attacker could exploit this vulnerability by sending malicious HTTP POST requests to the web-based management interface of an affected device. A successful exploit could allow the attacker to execute arbitrary commands on the underlying Linux shell as root. Cisco has released firmware updates that address this vulnerability.
How severe is CVE-2019-1652?
CVE-2019-1652 is rated HIGH with a CVSS base score of 7.2. EPSS puts the probability of exploitation in the next 30 days at 95.9%, higher than 99.9% 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-2019-1652?
Apply the vendor patch for Cisco Small Business RV320 and RV325 Dual Gigabit WAN VPN 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.