CVE-2019-1652: Cisco Small Business Routers Improper Input Validation Vulnerability

Severity: high (CVSS 7.2 v3.1)
Exploited in the wild: yes — in CISA KEV since 2022-03-03
EPSS: 95.9% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2019-01-24 · updated 2026-06-17
Weakness: CWE-20

Description

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.

Affected products

Cisco Rv320 Firmware: from 1.4.2.15 before 1.4.2.22 — fixed in 1.4.2.22
Cisco Rv325 Firmware: from 1.4.2.15 before 1.4.2.22 — fixed in 1.4.2.22

How to fix

Upgrade to a fixed version: Cisco Rv320 Firmware 1.4.2.22; Cisco Rv325 Firmware 1.4.2.22. Check the vendor advisory for mitigations.

References

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