What is the severity of CVE-2025-20139?

CVE-2025-20139 is classified as a high severity vulnerability due to its potential to cause a denial of service (DoS) condition.

How can I fix CVE-2025-20139?

To remediate CVE-2025-20139, ensure that you are using the latest version of Cisco Enterprise Chat and Email that includes the necessary security patches.

What impacts does CVE-2025-20139 have on affected software?

CVE-2025-20139 can allow an unauthenticated, remote attacker to disrupt chat messaging features, leading to service downtime.

Who is affected by CVE-2025-20139?

Organizations using Cisco Enterprise Chat and Email may be affected by CVE-2025-20139 if they do not implement the appropriate preventive measures.

What type of attack does CVE-2025-20139 enable?

CVE-2025-20139 enables a denial of service attack, which can incapacitate the chat messaging functionalities of the affected system.

Vulnerability/
CVE-2025-20139

high

7.5

CWE

185

2/4/2025

CVE-2025-20139

First published: Wed Apr 02 2025(Updated: )

A vulnerability in chat messaging features of Cisco Enterprise Chat and Email (ECE) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. This vulnerability is due to improper validation of user-supplied input to chat entry points. An attacker could exploit this vulnerability by sending malicious requests to a messaging chat entry point in the affected application. A successful exploit could allow the attacker to cause the application to stop responding, resulting in a DoS condition. The application may not recover on its own and may need an administrator to manually restart services to recover.

Credit: psirt@cisco.com

Affected Software	Affected Version	How to fix
Cisco Enterprise Chat and Email

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Reference Links

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ece-dos-tC6m9GZ8

Frequently Asked Questions

What is the severity of CVE-2025-20139?
CVE-2025-20139 is classified as a high severity vulnerability due to its potential to cause a denial of service (DoS) condition.
How can I fix CVE-2025-20139?
To remediate CVE-2025-20139, ensure that you are using the latest version of Cisco Enterprise Chat and Email that includes the necessary security patches.
What impacts does CVE-2025-20139 have on affected software?
CVE-2025-20139 can allow an unauthenticated, remote attacker to disrupt chat messaging features, leading to service downtime.
Who is affected by CVE-2025-20139?
Organizations using Cisco Enterprise Chat and Email may be affected by CVE-2025-20139 if they do not implement the appropriate preventive measures.
What type of attack does CVE-2025-20139 enable?
CVE-2025-20139 enables a denial of service attack, which can incapacitate the chat messaging functionalities of the affected system.

collector/mitre-cve
source/MITRE
agent/weakness
agent/type
agent/description
agent/first-publish-date
agent/references
agent/guess-ai
agent/software-canonical-lookup
agent/softwarecombine
collector/nvd-api
source/NVD
agent/source
agent/author
agent/severity
agent/last-modified-date
agent/tags
agent/event
vendor/cisco
canonical/cisco enterprise chat and email

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