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CVE-2024-20383

Cisco Secure Email and Web Manager Stored Cross-Site Scripting Vulnerability

HIGH
8.4
CVSS Score
Published: May 15, 2024 at 05:59 PM UTC
Updated: June 17, 2026 at 07:06 AM UTC
16 products affected across 1 vendorAsyncosSecure Email And Web Manager M380Secure Email And Web Manager M390X

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Severity
HIGH8.4
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

A vulnerability in the web-based management interface of Cisco AsyncOS Software for Cisco Secure Email and Web Manager could allow an authenticated, remote attacker to conduct an XSS attack against a user of the interface. This vulnerability is due to insufficient validation of user input. 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 execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information.

Affected

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

Asyncos· Cisco
95%
v < 15.5.1-24
Affected range stops below 15.5.1-24, so it looks safe — our inference, not a vendor statement
cisco-secure-email-and-web-manager-m170 (environment) · cisco-secure-email-and-web-manager-m190 (environment) · cisco-secure-email-and-web-manager-m195 (environment) · cisco-secure-email-and-web-manager-m380 (environment) · cisco-secure-email-and-web-manager-m390 (environment) · cisco-secure-email-and-web-manager-m390x (environment) · cisco-secure-email-and-web-manager-m395 (environment) · cisco-secure-email-and-web-manager-m680 (environment) · cisco-secure-email-and-web-manager-m690 (environment) · cisco-secure-email-and-web-manager-m690x (environment) · cisco-secure-email-and-web-manager-m695 (environment) · cisco-secure-email-and-web-manager-virtual-appliance-m100v (environment) · cisco-secure-email-and-web-manager-virtual-appliance-m300v (environment) · cisco-secure-email-and-web-manager-virtual-appliance-m600v (environment)
Cisco Secure Email and Web Manager· Cisco
60%
12.8.1-212.8.1-2113.0.0-27713.6.2-7813.8.1-10813.8.1-6813.8.1-7414.0.0-40414.1.0-22714.2.0-21214.2.0-22414.3.0-12015.0.0-334
Secure Email And Web Manager M170· Ciscodevice
80%
All versions
Secure Email And Web Manager M190· Ciscodevice
80%
All versions
Secure Email And Web Manager M195· Ciscodevice
80%
All versions
Secure Email And Web Manager M380· Ciscodevice
80%
All versions
Secure Email And Web Manager M390· Ciscodevice
80%
All versions
Secure Email And Web Manager M390X· Ciscodevice
80%
All versions
Secure Email And Web Manager M395· Ciscodevice
80%
All versions
Secure Email And Web Manager M680· Ciscodevice
80%
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor Advisory
Source: [email protected]
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-esa-sma-wsa-xss-bgG5WHOD

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.4HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
HIGH
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-79

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