CVE-2025-20139: A vulnerability in chat messaging features of Cisco Enterprise Chat and Email (ECE) could allow an unauthentic

Q: How do I fix CVE-2025-20139?

enterprise chat and email: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2025-20139 being exploited?

CVE-2025-20139 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-20139 affect?

CVE-2025-20139 affects enterprise chat and email. Severity is high (CVSS 7.5). 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-su

Q: How urgent is CVE-2025-20139?

Priority 44/100. High severity; Remotely exploitable, no login, no user action

This month

HIGH 7.5REMOTEMITIGATE

CVE-2025-20139 is a high-severity flaw (CVSS 7.5) affecting enterprise chat and email. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 at

Why this priority

High severity
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 48%)
CISA exploited list	No
Weakness	CWE-185
Published	2025-04-02
Last modified	2026-06-17

Publisher (CNA): Cisco Systems, Inc. · Vendor: cisco

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-04-02 17:15 UTCPublished CVE record published
2026-06-17 08:40 UTCUpdated Record last modified

cisco enterprise chat and email MITIGATE

Affected: < 12.6\(1\)es10

Fixed in: 12.6\(1\)es10

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy enterprise-chat-and-email || rpm -q enterprise-chat-and-email || enterprise-chat-and-email --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-20139?

enterprise chat and email: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-20139 being exploited?

CVE-2025-20139 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-20139 affect?

CVE-2025-20139 affects enterprise chat and email. Severity is high (CVSS 7.5). 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-su

How urgent is CVE-2025-20139?

Priority 44/100. High severity; Remotely exploitable, no login, no user action

Software pages

Cisco vulnerabilities

Related CVEs

CVE-2025-20310 MEDIUM 6.1 MITIGATE A vulnerability in the web UI of Cisco Enterprise Chat and Email (ECE) could allow an unauthenticated, remote
CVE-2024-20484 HIGH 7.5 MITIGATE A vulnerability in the External Agent Assignment Service (EAAS) feature of Cisco Enterprise Chat and Email (EC
CVE-2024-20367 MEDIUM 5.4 MITIGATE A vulnerability in the web UI of Cisco Enterprise Chat and Email (ECE) could allow an authenticated, remote at
CVE-2022-20634 MEDIUM 4.7 MITIGATE A vulnerability in the web-based management interface of Cisco ECE could allow an unauthenticated, remote
CVE-2022-20633 MEDIUM 5.3 MITIGATE A vulnerability in the web-based management interface of Cisco ECE could allow an unauthenticated, remote

References

← Back to latest CVEs