CVE-2021-1339

HIGH

Cisco Small Business RV Series Routers - Authenticated RCE and DoS via Web Interface

Title source: llm
STIX 2.1

Description

Multiple vulnerabilities in the web-based management interface of Cisco Small Business RV016, RV042, RV042G, RV082, RV320, and RV325 Routers could allow an authenticated, remote attacker to execute arbitrary code or cause an affected device to restart unexpectedly. These vulnerabilities are due to improper validation of user-supplied input in the web-based management interface. An attacker could exploit these vulnerabilities by sending crafted HTTP requests to an affected device. A successful exploit could allow the attacker to execute arbitrary code as the root user on the underlying operating system or cause the device to reload, resulting in a denial of service (DoS) condition. To exploit these vulnerabilities, an attacker would need to have valid administrator credentials on the affected device.

References (1)

Core 1
Core References

Scores

CVSS v3 7.2
EPSS 0.0043
EPSS Percentile 63.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-121
Status published
Products (6)
cisco/rv016_multi-wan_vpn_router_firmware < 4.2.3.14
cisco/rv042_dual_wan_vpn_router_firmware < 4.2.3.14
cisco/rv042g_dual_gigabit_wan_vpn_router_firmware < 4.2.3.14
cisco/rv082_dual_wan_vpn_router_firmware < 4.2.3.14
cisco/rv320_dual_gigabit_wan_vpn_router_firmware < 1.5.1.11
cisco/rv325_dual_gigabit_wan_vpn_router_firmware < 1.5.1.11
Published Feb 04, 2021
Tracked Since Feb 18, 2026