CISA-confirmed known exploited vulnerability

CVE-2019-15271

Cisco RV Series Routers Deserialization of Untrusted Data Vulnerability

Cisco · RV Series Routers

Vulnerability details

A deserialization of untrusted data vulnerability in the web-based management interface of certain Cisco Small Business RV Series Routers could allow an attacker to execute code with root privileges.

Added to CISA KEV: 2022-06-08

Ransomware campaign use: Unknown

CISA due date: 2022-06-22

Defensive guidance from CISA

Apply updates per vendor instructions.

This is the source's required-action field, not an independently validated patch procedure. Refer to the vendor for exact affected versions and fixes.

Source catalog date: 2026-11-06T19:44:45.1797Z · Last retrieved: 2026-11-06 21:02:26 UTC

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