CVE-2022-20831Network attack vector

Stored script execution via unvalidated interface fields

Published Nov 10, 2022 · Updated Aug 3, 2024

Stored XSS in Cisco Firepower Management Center allows remote authenticated users to execute script in another interface user's browser. The web-based management interface insufficiently validates crafted input inserted into various data fields and later renders it to other users. High-privilege access and user interaction are required; exploitation exposes browser-held data and can alter interface content.

CVSS severity4.8
Medium
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Cisco Firepower Management Center allows remote authenticated users to execute script in another interface user's browser. The web-based management interface insufficiently validates crafted input inserted into various data fields and later renders it to other users. High-privilege access and user interaction are required; exploitation exposes browser-held data and can alter interface content.

The record

CVE
CVE-2022-20831
Published
Nov 10, 2022
Updated
Aug 3, 2024
Vendor
ClamAV
Product
Cisco Firepower Management Center
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Nov 10, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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=6.2.3
  2. Affected versionversion=6.2.3.1
  3. Affected versionversion=6.2.3.10
  4. Affected versionversion=6.2.3.11
  5. Affected versionversion=6.2.3.12
  6. Affected versionversion=6.2.3.13
  7. Affected versionversion=6.2.3.14
  8. Affected versionversion=6.2.3.15
  9. Affected versionversion=6.2.3.16
  10. Affected versionversion=6.2.3.17
  11. Affected versionversion=6.2.3.18
  12. Affected versionversion=6.2.3.2
  13. Affected versionversion=6.2.3.3
  14. Affected versionversion=6.2.3.4
  15. Affected versionversion=6.2.3.5
  16. Affected versionversion=6.2.3.6
  17. Affected versionversion=6.2.3.7
  18. Affected versionversion=6.2.3.8
  19. Affected versionversion=6.2.3.9
  20. Affected versionversion=6.4.0
  21. Affected versionversion=6.4.0.1
  22. Affected versionversion=6.4.0.10
  23. Affected versionversion=6.4.0.11
  24. Affected versionversion=6.4.0.12
  25. Affected versionversion=6.4.0.13
  26. Affected versionversion=6.4.0.14
  27. Affected versionversion=6.4.0.15
  28. Affected versionversion=6.4.0.2
  29. Affected versionversion=6.4.0.3
  30. Affected versionversion=6.4.0.4
  31. Affected versionversion=6.4.0.5
  32. Affected versionversion=6.4.0.6
  33. Affected versionversion=6.4.0.7
  34. Affected versionversion=6.4.0.8
  35. Affected versionversion=6.4.0.9
  36. Affected versionversion=6.6.0
  37. Affected versionversion=6.6.0.1
  38. Affected versionversion=6.6.1
  39. Affected versionversion=6.6.3
  40. Affected versionversion=6.6.4
  41. Affected versionversion=6.6.5
  42. Affected versionversion=6.6.5.1
  43. Affected versionversion=6.6.5.2
  44. Affected versionversion=6.6.7
  45. Affected versionversion=6.7.0
  46. Affected versionversion=6.7.0.1
  47. Affected versionversion=6.7.0.2
  48. Affected versionversion=6.7.0.3
  49. Affected versionversion=7.0.0
  50. Affected versionversion=7.0.0.1
  51. Affected versionversion=7.0.1
  52. Affected versionversion=7.0.1.1
  53. Affected versionversion=7.0.2
  54. Affected versionversion=7.0.2.1
  55. Affected versionversion=7.0.3
  56. Affected versionversion=7.0.4
  57. Affected versionversion=7.1.0
  58. Affected versionversion=7.1.0.1
  59. Affected versionversion=7.1.0.2
  60. Affected versionversion=7.2.0
  61. Affected versionversion=7.2.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

ClamAV · Cisco Firepower Management Centerversion=6.2.3; version=6.2.3.1; version=6.2.3.10; version=6.2.3.11; version=6.2.3.12; version=6.2.3.13; version=6.2.3.14; version=6.2.3.15; version=6.2.3.16; version=6.2.3.17; version=6.2.3.18; version=6.2.3.2; version=6.2.3.3; version=6.2.3.4; version=6.2.3.5; version=6.2.3.6; version=6.2.3.7; version=6.2.3.8; version=6.2.3.9; version=6.4.0; version=6.4.0.1; version=6.4.0.10; version=6.4.0.11; version=6.4.0.12; version=6.4.0.13; version=6.4.0.14; version=6.4.0.15; version=6.4.0.2; version=6.4.0.3; version=6.4.0.4; version=6.4.0.5; version=6.4.0.6; version=6.4.0.7; version=6.4.0.8; version=6.4.0.9; version=6.6.0; version=6.6.0.1; version=6.6.1; version=6.6.3; version=6.6.4; version=6.6.5; version=6.6.5.1; version=6.6.5.2; version=6.6.7; version=6.7.0; version=6.7.0.1; version=6.7.0.2; version=6.7.0.3; version=7.0.0; version=7.0.0.1; version=7.0.1; version=7.0.1.1; version=7.0.2; version=7.0.2.1; version=7.0.3; version=7.0.4; version=7.1.0; version=7.1.0.1; version=7.1.0.2; version=7.2.0; version=7.2.0.1

Published CVSS scores

4.8CiscoCVSS:3.1/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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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