CVE-2025-20210Network attack vector

Unauthenticated proxy hijacking via unprotected management API

Published May 7, 2025 · Updated May 7, 2025

Authentication bypass in Cisco Catalyst Center before 2.3.7.9 allows remote attackers to read or modify outgoing proxy settings. A management API endpoint accepts requests without authenticating them before returning or replacing the controller's outbound proxy configuration. No credentials or special configuration are required; a modified proxy disrupts internet access or redirects outbound traffic through an attacker-controlled intermediary.

CVSS severity7.3
High
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Cisco Catalyst Center before 2.3.7.9 allows remote attackers to read or modify outgoing proxy settings. A management API endpoint accepts requests without authenticating them before returning or replacing the controller's outbound proxy configuration. No credentials or special configuration are required; a modified proxy disrupts internet access or redirects outbound traffic through an attacker-controlled intermediary.

The record

CVE
CVE-2025-20210
Published
May 7, 2025
Updated
May 7, 2025
Vendor
ClamAV
Product
Cisco Catalyst Center
Classifications
CWE-306, T1557
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 7, 2025CVE publishedPublication date reported by the CVE source.
  2. May 7, 2025Record 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=2.1.1.0
  2. Affected versionversion=2.1.1.3
  3. Affected versionversion=2.1.2.0
  4. Affected versionversion=2.1.2.3
  5. Affected versionversion=2.1.2.4
  6. Affected versionversion=2.1.2.5
  7. Affected versionversion=2.1.2.6
  8. Affected versionversion=2.1.2.7
  9. Affected versionversion=2.1.2.8
  10. Affected versionversion=2.2.1.0
  11. Affected versionversion=2.2.1.3
  12. Affected versionversion=2.2.2.0
  13. Affected versionversion=2.2.2.1
  14. Affected versionversion=2.2.2.3
  15. Affected versionversion=2.2.2.4
  16. Affected versionversion=2.2.2.5
  17. Affected versionversion=2.2.2.6
  18. Affected versionversion=2.2.2.7
  19. Affected versionversion=2.2.2.8
  20. Affected versionversion=2.2.2.9
  21. Affected versionversion=2.2.3.0
  22. Affected versionversion=2.2.3.3
  23. Affected versionversion=2.2.3.4
  24. Affected versionversion=2.2.3.5
  25. Affected versionversion=2.2.3.6
  26. Affected versionversion=2.3.2.1
  27. Affected versionversion=2.3.2.1-AIRGAP
  28. Affected versionversion=2.3.2.1-AIRGAP-CA
  29. Affected versionversion=2.3.2.3
  30. Affected versionversion=2.3.3.0
  31. Affected versionversion=2.3.3.0-AIRGAP
  32. Affected versionversion=2.3.3.1
  33. Affected versionversion=2.3.3.1-AIRGAP
  34. Affected versionversion=2.3.3.3
  35. Affected versionversion=2.3.3.3-AIRGAP
  36. Affected versionversion=2.3.3.3-AIRGAP-CA
  37. Affected versionversion=2.3.3.4
  38. Affected versionversion=2.3.3.4-AIRGAP
  39. Affected versionversion=2.3.3.4-AIRGAP-MDNAC
  40. Affected versionversion=2.3.3.4-HF1
  41. Affected versionversion=2.3.3.5
  42. Affected versionversion=2.3.3.5-AIRGAP
  43. Affected versionversion=2.3.3.6
  44. Affected versionversion=2.3.3.6-70045-HF1
  45. Affected versionversion=2.3.3.6-AIRGAP
  46. Affected versionversion=2.3.3.6-AIRGAP-MDNAC
  47. Affected versionversion=2.3.3.7
  48. Affected versionversion=2.3.3.7-72323
  49. Affected versionversion=2.3.3.7-72328-AIRGAP
  50. Affected versionversion=2.3.3.7-72328-MDNAC
  51. Affected versionversion=2.3.3.7-AIRGAP
  52. Affected versionversion=2.3.3.7-AIRGAP-MDNAC
  53. Affected versionversion=2.3.4.0
  54. Affected versionversion=2.3.4.0-AIRGAP
  55. Affected versionversion=2.3.4.3
  56. Affected versionversion=2.3.4.3-AIRGAP
  57. Affected versionversion=2.3.5.0
  58. Affected versionversion=2.3.5.0-AIRGAP
  59. Affected versionversion=2.3.5.0-AIRGAP-MDNAC
  60. Affected versionversion=2.3.5.3
  61. Affected versionversion=2.3.5.3-AIRGAP
  62. Affected versionversion=2.3.5.3-AIRGAP-MDNAC
  63. Affected versionversion=2.3.5.4
  64. Affected versionversion=2.3.5.4-AIRGAP
  65. Affected versionversion=2.3.5.4-AIRGAP-MDNAC
  66. Affected versionversion=2.3.5.5
  67. Affected versionversion=2.3.5.5-70026-HF51
  68. Affected versionversion=2.3.5.5-70026-HF52
  69. Affected versionversion=2.3.5.5-70026-HF53
  70. Affected versionversion=2.3.5.5-70026-HF70
  71. Affected versionversion=2.3.5.5-70026-HF71
  72. Affected versionversion=2.3.5.5-70026-HF72
  73. Affected versionversion=2.3.5.5-AIRGAP
  74. Affected versionversion=2.3.5.5-AIRGAP-MDNAC
  75. Affected versionversion=2.3.5.6
  76. Affected versionversion=2.3.5.6-70143-HF20
  77. Affected versionversion=2.3.5.6-AIRGAP
  78. Affected versionversion=2.3.5.6-AIRGAP-MDNAC
  79. Affected versionversion=2.3.6.0
  80. Affected versionversion=2.3.6.0-AIRGAP
  81. Affected versionversion=2.3.7.0
  82. Affected versionversion=2.3.7.0-AIRGAP
  83. Affected versionversion=2.3.7.0-AIRGAP-MDNAC
  84. Affected versionversion=2.3.7.0-VA
  85. Affected versionversion=2.3.7.3
  86. Affected versionversion=2.3.7.3-AIRGAP
  87. Affected versionversion=2.3.7.3-AIRGAP-MDNAC
  88. Affected versionversion=2.3.7.4
  89. Affected versionversion=2.3.7.4-AIRGAP
  90. Affected versionversion=2.3.7.4-AIRGAP-MDNAC
  91. Affected versionversion=2.3.7.5-AIRGAP
  92. Affected versionversion=2.3.7.5-VA
  93. Affected versionversion=2.3.7.6
  94. Affected versionversion=2.3.7.6-AIRGAP
  95. Affected versionversion=2.3.7.6-AIRGAP-MDNAC
  96. Affected versionversion=2.3.7.6-VA
  97. Affected versionversion=2.3.7.7
  98. Affected versionversion=2.3.7.7-AIRGAP
  99. Affected versionversion=2.3.7.7-AIRGAP-MDNAC
  100. Affected versionversion=2.3.7.7-VA

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ClamAV · Cisco Catalyst Centerversion=2.1.1.0; version=2.1.1.3; version=2.1.2.0; version=2.1.2.3; version=2.1.2.4; version=2.1.2.5; version=2.1.2.6; version=2.1.2.7; version=2.1.2.8; version=2.2.1.0; version=2.2.1.3; version=2.2.2.0; version=2.2.2.1; version=2.2.2.3; version=2.2.2.4; version=2.2.2.5; version=2.2.2.6; version=2.2.2.7; version=2.2.2.8; version=2.2.2.9; version=2.2.3.0; version=2.2.3.3; version=2.2.3.4; version=2.2.3.5; version=2.2.3.6; version=2.3.2.1; version=2.3.2.1-AIRGAP; version=2.3.2.1-AIRGAP-CA; version=2.3.2.3; version=2.3.3.0; version=2.3.3.0-AIRGAP; version=2.3.3.1; version=2.3.3.1-AIRGAP; version=2.3.3.3; version=2.3.3.3-AIRGAP; version=2.3.3.3-AIRGAP-CA; version=2.3.3.4; version=2.3.3.4-AIRGAP; version=2.3.3.4-AIRGAP-MDNAC; version=2.3.3.4-HF1; version=2.3.3.5; version=2.3.3.5-AIRGAP; version=2.3.3.6; version=2.3.3.6-70045-HF1; version=2.3.3.6-AIRGAP; version=2.3.3.6-AIRGAP-MDNAC; version=2.3.3.7; version=2.3.3.7-72323; version=2.3.3.7-72328-AIRGAP; version=2.3.3.7-72328-MDNAC; version=2.3.3.7-AIRGAP; version=2.3.3.7-AIRGAP-MDNAC; version=2.3.4.0; version=2.3.4.0-AIRGAP; version=2.3.4.3; version=2.3.4.3-AIRGAP; version=2.3.5.0; version=2.3.5.0-AIRGAP; version=2.3.5.0-AIRGAP-MDNAC; version=2.3.5.3; version=2.3.5.3-AIRGAP; version=2.3.5.3-AIRGAP-MDNAC; version=2.3.5.4; version=2.3.5.4-AIRGAP; version=2.3.5.4-AIRGAP-MDNAC; version=2.3.5.5; version=2.3.5.5-70026-HF51; version=2.3.5.5-70026-HF52; version=2.3.5.5-70026-HF53; version=2.3.5.5-70026-HF70; version=2.3.5.5-70026-HF71; version=2.3.5.5-70026-HF72; version=2.3.5.5-AIRGAP; version=2.3.5.5-AIRGAP-MDNAC; version=2.3.5.6; version=2.3.5.6-70143-HF20; version=2.3.5.6-AIRGAP; version=2.3.5.6-AIRGAP-MDNAC; version=2.3.6.0; version=2.3.6.0-AIRGAP; version=2.3.7.0; version=2.3.7.0-AIRGAP; version=2.3.7.0-AIRGAP-MDNAC; version=2.3.7.0-VA; version=2.3.7.3; version=2.3.7.3-AIRGAP; version=2.3.7.3-AIRGAP-MDNAC; version=2.3.7.4; version=2.3.7.4-AIRGAP; version=2.3.7.4-AIRGAP-MDNAC; version=2.3.7.5-AIRGAP; version=2.3.7.5-VA; version=2.3.7.6; version=2.3.7.6-AIRGAP; version=2.3.7.6-AIRGAP-MDNAC; version=2.3.7.6-VA; version=2.3.7.7; version=2.3.7.7-AIRGAP; version=2.3.7.7-AIRGAP-MDNAC; version=2.3.7.7-VA

Published CVSS scores

7.3Cisco Systems, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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.

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-306Missing Authentication for Critical Function
T1557Adversary-in-the-Middle

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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