CVE-2024-20511Network attack vector

User-assisted browser script execution via unvalidated input

Published Nov 6, 2024 · Updated Nov 6, 2024

Reflected XSS in Cisco Unified Communications Manager 12.0(1)SU1 through 15SU1a allows remote attackers to execute browser scripts. The web-based management interface incorporates user-supplied input into a response without proper validation, allowing crafted-link content to run in the interface's browser context. Exploitation requires an interface user to follow the link; successful execution can alter interface content or access sensitive browser-based information.

CVSS severity6.1
Medium
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in Cisco Unified Communications Manager 12.0(1)SU1 through 15SU1a allows remote attackers to execute browser scripts. The web-based management interface incorporates user-supplied input into a response without proper validation, allowing crafted-link content to run in the interface's browser context. Exploitation requires an interface user to follow the link; successful execution can alter interface content or access sensitive browser-based information.

The record

CVE
CVE-2024-20511
Published
Nov 6, 2024
Updated
Nov 6, 2024
Vendor
ClamAV
Product
Cisco Unified Communications Manager
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 6, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 6, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=12.0(1)SU1
  2. Affected versionversion=12.0(1)SU2
  3. Affected versionversion=12.0(1)SU3
  4. Affected versionversion=12.0(1)SU4
  5. Affected versionversion=12.0(1)SU5
  6. Affected versionversion=12.5(1)
  7. Affected versionversion=12.5(1)SU1
  8. Affected versionversion=12.5(1)SU2
  9. Affected versionversion=12.5(1)SU3
  10. Affected versionversion=12.5(1)SU4
  11. Affected versionversion=12.5(1)SU5
  12. Affected versionversion=12.5(1)SU6
  13. Affected versionversion=12.5(1)SU7
  14. Affected versionversion=12.5(1)SU7a
  15. Affected versionversion=12.5(1)SU8
  16. Affected versionversion=12.5(1)SU8a
  17. Affected versionversion=12.5(1)SU9
  18. Affected versionversion=14
  19. Affected versionversion=14SU1
  20. Affected versionversion=14SU2
  21. Affected versionversion=14SU3
  22. Affected versionversion=14SU4
  23. Affected versionversion=14SU4a
  24. Affected versionversion=15
  25. Affected versionversion=15SU1
  26. Affected versionversion=15SU1a

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ClamAV · Cisco Unified Communications Managerversion=12.0(1)SU1; version=12.0(1)SU2; version=12.0(1)SU3; version=12.0(1)SU4; version=12.0(1)SU5; version=12.5(1); version=12.5(1)SU1; version=12.5(1)SU2; version=12.5(1)SU3; version=12.5(1)SU4; version=12.5(1)SU5; version=12.5(1)SU6; version=12.5(1)SU7; version=12.5(1)SU7a; version=12.5(1)SU8; version=12.5(1)SU8a; version=12.5(1)SU9; version=14; version=14SU1; version=14SU2; version=14SU3; version=14SU4; version=14SU4a; version=15; version=15SU1; version=15SU1a

Published CVSS scores

6.1CiscoCVSS:3.1/AV:N/AC:L/PR:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

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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