CVE-2024-20392

MEDIUM

6.1

CVSS Score

Published: May 15, 2024 at 05:22 PM UTC

Updated: June 17, 2026 at 07:06 AM UTC

8 products affected across 1 vendorAsyncosSecure Email Gateway Virtual Appliance C300VSecure Email Gateway C695

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Severity

MEDIUM6.1

Exploit prediction

EPSS 0.4%

SSVC

No known exploit

Description

A vulnerability in the web-based management API of Cisco AsyncOS Software for Cisco Secure Email Gateway could allow an unauthenticated, remote attacker to conduct an HTTP response splitting attack. This vulnerability is due to insufficient input validation of some parameters that are passed to the web-based management API of the affected system. An attacker could exploit this vulnerability by persuading a user of an affected interface to click a crafted link. A successful exploit could allow the attacker to perform cross-site scripting (XSS) attacks, resulting in the execution of arbitrary script code in the browser of the targeted user, or could allow the attacker to access sensitive, browser-based information.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Asyncos · Cisco

95%

11.0.3-238 11.1.0-128 11.1.0-69 12.0.0-419 12.1.0-71 12.1.0-87 12.1.0-89 12.5.0-66 12.5.3-41 12.5.4-41 13.0.0-392 13.0.5-7 13.5.1-277 13.5.4-38 14.0.0-698 14.2.0-620 14.2.1-20 14.3.0-32 15.0.0-104 15.0.1-30 15.5.0-48

cisco-secure-email-gateway-c195 (environment) · cisco-secure-email-gateway-c395 (environment) · cisco-secure-email-gateway-c695 (environment) · cisco-secure-email-gateway-virtual-appliance-c100v (environment) · cisco-secure-email-gateway-virtual-appliance-c300v (environment) · cisco-secure-email-gateway-virtual-appliance-c600v (environment)