CVE-2020-3129Network attack vector

Stored script execution via insufficient field validation

Published Jan 26, 2020 · Updated Nov 15, 2024

Stored cross-site scripting in Cisco Unity Connection before 12.5SU2 allows remote authenticated users to run script in viewers' browsers. The web management interface accepts crafted data in an unspecified field without sufficient validation and stores it for later display. An administrative account is required to submit the data, and execution occurs when any user views the attacker-supplied element, enabling browser-context data access or modification.

CVSS severity4.8
Medium
EPSS probability0.62%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in Cisco Unity Connection before 12.5SU2 allows remote authenticated users to run script in viewers' browsers. The web management interface accepts crafted data in an unspecified field without sufficient validation and stores it for later display. An administrative account is required to submit the data, and execution occurs when any user views the attacker-supplied element, enabling browser-context data access or modification.

The record

CVE
CVE-2020-3129
Published
Jan 26, 2020
Updated
Nov 15, 2024
Vendor
ClamAV
Product
Cisco Unity Connection
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 26, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <n/a

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

ClamAV · Cisco Unity Connectionversion=unspecified <n/a

Published CVSS scores

4.8CiscoCVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript/JScript

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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