CVE-2019-1827: Cisco Small Business RV320 and RV325 Routers Online Help Reflected Cross-Site Scripting Vulnerability

Severity: medium (CVSS 6.1 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-04-04 · updated 2026-06-17
Weakness: CWE-79

Description

A vulnerability in the Online Help web service of Cisco Small Business RV320 and RV325 Dual Gigabit WAN VPN Routers could allow an unauthenticated, remote attacker to conduct a reflected cross-site scripting (XSS) attack against a user of the service. The vulnerability exists because the Online Help web service of an affected device insufficiently validates user-supplied input. An attacker could exploit this vulnerability by persuading a user of the service to click a malicious link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected service or access sensitive browser-based information.This vulnerability affects Cisco Small Business RV320 and RV325 Dual Gigabit WAN VPN Routers running firmware releases prior to 1.4.2.22.

Affected products

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