CVE-2020-3267Network attack vector

Agent service disruption via unauthorized API state change

Published Jun 3, 2020 · Updated Nov 15, 2024

Improper authorization in Cisco Unified Contact Center Express before 12.5(1) allows remote authenticated users to change any agent's availability. The API subsystem accepts a crafted state-change call from valid agent credentials without enforcing authorization for the targeted agent. Any agent account can therefore make other agents unavailable, disrupting contact-center staffing and potentially denying service.

CVSS severity5.4
Medium
EPSS probability0.81%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authorization in Cisco Unified Contact Center Express before 12.5(1) allows remote authenticated users to change any agent's availability. The API subsystem accepts a crafted state-change call from valid agent credentials without enforcing authorization for the targeted agent. Any agent account can therefore make other agents unavailable, disrupting contact-center staffing and potentially denying service.

The record

CVE
CVE-2020-3267
Published
Jun 3, 2020
Updated
Nov 15, 2024
Vendor
ClamAV
Product
Cisco Unified Contact Center Express
Classifications
CWE-285, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 3, 2020CVE publishedPublication date reported by the CVE source.
  2. Nov 15, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=n/a

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

ClamAV · Cisco Unified Contact Center Expressversion=n/a

Published CVSS scores

5.4CiscoCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L/E:X/RL:X/RC:X

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-285Improper Authorization
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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