CVE-2022-20701

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

CVE-2022-20701 encompasses multiple vulnerabilities, primarily stack-based buffer overflows and out-of-bounds writes, affecting Cisco Small Business RV160, RV260, RV340, and RV345 Series Routers. These flaws carry a maximum CVSS score of 10.0 and could permit arbitrary code execution, privilege escalation, command execution, authentication bypass, loading of unsigned software, or denial of service.

An unauthenticated remote attacker can exploit the issues over the network without user interaction to obtain full control of an affected device or disrupt its operation. The vulnerabilities reside in the routers' web management interfaces and related services, enabling an adversary positioned to reach those interfaces to compromise the device.

Cisco's security advisory recommends applying the vendor-supplied firmware updates that address the flaws and, where updates cannot be installed immediately, implementing network segmentation and access controls to limit exposure of the management interfaces. The advisory further notes that some of the issues were identified through external reports and provides per-model fixed release information.

The CVE appears in CISA's Known Exploited Vulnerabilities catalog, confirming observed in-the-wild exploitation. Its EPSS score has remained flat at 0.0608 with no material increase since disclosure.