CVE-2019-15271

CVE-2019-15271 is a high-severity (CVSS 8.8) vulnerability in Cisco RV Series Routers. CISA added it to the Known Exploited Vulnerabilities catalog on June 8, 2022, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by June 22, 2022. CISA does not currently list it as used in ransomware campaigns. Cisco has 101 vulnerabilities in the KEV catalog, 7 of them linked to ransomware.

A vulnerability in the web-based management interface of certain Cisco Small Business RV Series Routers could allow an authenticated, remote attacker to execute arbitrary commands with root privileges. The attacker must have either a valid credential or an active session token. The vulnerability is due to lack of input validation of the HTTP payload. An attacker could exploit this vulnerability by sending a malicious HTTP request to the web-based management interface of the targeted device. A successful exploit could allow the attacker to execute commands with root privileges.

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20191106-sbrv-cmd-x
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20191106-sbrv-cmd-x
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-15271