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CVE-2024-20484

Cisco Enterprise Chat and Email Denial of Service Vulnerability

High7.5EPSS 0.64%
Published
Updated
Reserved
Assigned by
cisco

Description

A vulnerability in the External Agent Assignment Service (EAAS) feature of Cisco Enterprise Chat and Email (ECE) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient validation of Media Routing Peripheral Interface Manager (MR PIM) traffic that is received by an affected device. An attacker could exploit this vulnerability by sending crafted MR PIM traffic to an affected device. A successful exploit could allow the attacker to trigger a failure on the MR PIM connection between Cisco ECE and Cisco Unified Contact Center Enterprise (CCE), leading to a DoS condition on EAAS that would prevent customers from starting chat, callback, or delayed callback sessions. Note: When the attack traffic stops, the EAAS process must be manually restarted to restore normal operation. To restart the process in the System Console, choose Shared Resources > Services > Unified CCE > EAAS, then click Start.

Timeline

  1. ID reserved

    By cisco

  2. · 12 months later

    Published

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2024-20484, by who scored it
Scored byCVSSScoreVector
ciscoCNA (assigner)3.1High7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVDNVD · Analyzed3.1High7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS (exploitation in 30 days)
0.64% · top 49% of all CVEs (7 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: yes · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.

Weakness

Affected products

  • Cisco · Cisco Enterprise Chat and Email

    • affected 11.6(1)_ES3
    • affected 11.6(1)_ES4
    • affected 12.0(1)_ES6
    • affected 11.6(1)_ES9
    • affected 11.6(1)_ES6
    • affected 11.6(1)_ES5
    • affected 12.5(1)_ET1
    • affected 12.5(1)_ES3_ET1
    • affected 12.0(1)_ES3
    • affected 11.6(1)_ES11
    • affected 12.0(1)_ES4
    • affected 12.0(1)_ES5
    • affected 11.6(1)_ES2
    • affected 11.6(1)_ES9a
    • affected 11.6(1)_ES10
    • affected 12.0(1)_ES1
    • affected 12.0(1)
    • affected 12.5(1)_ES3
    • affected 12.6(1)
    • affected 11.5(1)
    • affected 12.0(1)_ES2
    • affected 11.6(1)_ES7
    • affected 12.6(1)_ET1
    • affected 11.6(1)
    • affected 12.6(1)_ET2
    • affected 12.5(1)_ES3_ET2
    • affected 12.0(1)_ES6_ET2
    • affected 12.6(1)_ES1
    • affected 11.6(1)_ES12
    • affected 12.6(1)_ET3
    • affected 12.5(1)_ES4_ET1
    • affected 12.0(1)_ES6_ET3
    • affected 12.6(1)_ES1_ET1
    • affected 12.6(1)_ES2
    • affected 12.6_ES2_ET1
    • affected 12.5(1)_ES5
    • affected 12.6_ES2_ET2
    • affected 12.0(1)_ES7
    • affected 12.6_ES2_ET3
    • affected 12.0(1)_ES7_ET1
    • and 35 more

What to do

Exploitation: The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.

References (1)

Sources

The same CVE in the primary databases and aggregators, to check against.

Badge for a README or a ticket

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Record last updated .