ACTIVELY EXPLOITED
CVE-2019-15271: Cisco RV Series Routers Deserialization of Untrusted Data Vulnerability
| Vendor | Cisco |
|---|---|
| Product | RV Series Routers |
| Actively exploited | Yes |
| Added to CISA KEV | 8 Jun 2022 |
| CISA federal deadline | 22 Jun 2022 |
| Weakness (CWE) | CWE-502 |
Required action (CISA's text)
Apply updates per vendor instructions.
Description (NVD)
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.
SOURCES
Other Cisco flaws
- CVE-2026-20320: Cisco BroadWorks Improper Restriction of XML External Entity Reference Vulnerability
- CVE-2026-76418: Cisco Secure Firewall ASA Software and Cisco Secure FTD Software Unchecked Return Value to NULL Pointer Dereference Vulnerability
- CVE-2026-76519: Cisco Secure Email Gateway Relative Path Traversal Vulnerability
- CVE-2026-76504: Cisco Catalyst SD-WAN Manager Hex Encoding Vulnerability
- CVE-2026-76460: Cisco Identity Services Engine Incorrect Use of Privileged APIs Vulnerability
Data from NVD, CISA KEV, FIRST EPSS and vendor advisories. Updated 10 Nov 2026.