CVE-2026-20128

HIGHNVD 7.59.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2026-04-20), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 7.5 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 4 sources updated this weekExploited in the wild
7.5
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 5%CVSS: 7.5Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

A vulnerability in the Data Collection Agent (DCA) feature of Cisco Catalyst SD-WAN Manager could allow an unauthenticated, remote attacker to gain DCA user privileges on an affected system. This vulnerability is due to the presence of a credential file for the DCA user on an affected system. An attacker could exploit this vulnerability by sending a crafted HTTP request and reading the file that contains the DCA password from that affected system. A successful exploit could allow the attacker to access another affected system and gain DCA user privileges. Note: Cisco Catalyst SD-WAN Manager releases 20.18 and later are not affected by this vulnerability.

CVSS v3
7.5
EG Score
9.0(high)
EPSS
91.7%
KEV
⚠ Exploited

Published

February 25, 2026

Last Modified

April 21, 2026

Advisory Details (2)

Auto-updated May 20, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: cisa.
cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20128
generic🟡 PoC Available

Cisco Catalyst SD-WAN Vulnerabilities

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-authbp-qwCX8D4v

Vendor Advisories for CVE-2026-20128(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 61× in last 7d / 232× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 449 total refreshes for this CVE.

  1. 2026-07-22 20:07 UTCGHSA enrichment
  2. 2026-07-22 19:40 UTCCISA KEV update
  3. 2026-07-22 15:57 UTCEG score recompute
  4. 2026-07-22 15:56 UTCGHSA enrichment
  5. 2026-07-22 14:08 UTCEPSS rescore
  6. 2026-07-22 11:45 UTCGHSA enrichment
  7. 2026-07-22 07:35 UTCGHSA enrichment
  8. 2026-07-22 03:25 UTCGHSA enrichment
  9. 2026-07-21 23:15 UTCGHSA enrichment
  10. 2026-07-21 18:02 UTCEG score recompute
  11. 2026-07-21 18:02 UTCGHSA enrichment
  12. 2026-07-21 15:24 UTCEPSS rescore
  13. 2026-07-21 15:24 UTCEPSS rescore
  14. 2026-07-21 14:37 UTCCISA KEV update
  15. 2026-07-21 13:52 UTCGHSA enrichment
  16. 2026-07-21 09:41 UTCGHSA enrichment
  17. 2026-07-21 05:30 UTCGHSA enrichment
  18. 2026-07-21 01:21 UTCGHSA enrichment
  19. 2026-07-20 21:11 UTCEG score recompute
  20. 2026-07-20 21:11 UTCGHSA enrichment
  21. 2026-07-20 17:08 UTCEPSS rescore
  22. 2026-07-20 17:01 UTCGHSA enrichment
  23. 2026-07-20 12:51 UTCGHSA enrichment
  24. 2026-07-20 08:41 UTCGHSA enrichment
  25. 2026-07-20 04:31 UTCGHSA enrichment
Show 75 more
  1. 2026-07-19 20:11 UTCGHSA enrichment
  2. 2026-07-19 16:01 UTCEG score recompute
  3. 2026-07-19 16:01 UTCGHSA enrichment
  4. 2026-07-19 14:31 UTCEPSS rescore
  5. 2026-07-19 14:31 UTCEPSS rescore
  6. 2026-07-19 11:52 UTCGHSA enrichment
  7. 2026-07-19 07:42 UTCGHSA enrichment
  8. 2026-07-19 03:32 UTCEG score recompute
  9. 2026-07-19 03:32 UTCGHSA enrichment
  10. 2026-07-19 02:29 UTCEPSS rescore
  11. 2026-07-19 02:28 UTCEPSS rescore
  12. 2026-07-18 23:21 UTCGHSA enrichment
  13. 2026-07-18 19:11 UTCGHSA enrichment
  14. 2026-07-18 15:01 UTCGHSA enrichment
  15. 2026-07-18 10:51 UTCEG score recompute
  16. 2026-07-18 10:51 UTCGHSA enrichment
  17. 2026-07-18 10:04 UTCEPSS rescore
  18. 2026-07-18 10:04 UTCEPSS rescore
  19. 2026-07-18 06:40 UTCGHSA enrichment
  20. 2026-07-18 02:30 UTCGHSA enrichment
  21. 2026-07-17 22:19 UTCGHSA enrichment
  22. 2026-07-17 18:09 UTCGHSA enrichment
  23. 2026-07-17 13:59 UTCGHSA enrichment
  24. 2026-07-17 09:49 UTCEG score recompute
  25. 2026-07-17 09:49 UTCGHSA enrichment
  26. 2026-07-17 05:39 UTCGHSA enrichment
  27. 2026-07-17 01:29 UTCGHSA enrichment
  28. 2026-07-16 21:19 UTCGHSA enrichment
  29. 2026-07-16 17:09 UTCGHSA enrichment
  30. 2026-07-16 17:04 UTCCISA KEV update
  31. 2026-07-16 17:03 UTCEPSS rescore
  32. 2026-07-16 17:03 UTCEPSS rescore
  33. 2026-07-16 12:59 UTCGHSA enrichment
  34. 2026-07-16 08:49 UTCGHSA enrichment
  35. 2026-07-16 04:40 UTCGHSA enrichment
  36. 2026-07-16 00:30 UTCGHSA enrichment
  37. 2026-07-15 20:20 UTCGHSA enrichment
  38. 2026-07-15 16:57 UTCEPSS rescore
  39. 2026-07-15 16:57 UTCEPSS rescore
  40. 2026-07-15 16:49 UTCCISA KEV update
  41. 2026-07-15 16:10 UTCGHSA enrichment
  42. 2026-07-15 15:04 UTCCISA KEV update
  43. 2026-07-15 11:59 UTCGHSA enrichment
  44. 2026-07-15 07:49 UTCGHSA enrichment
  45. 2026-07-15 03:39 UTCGHSA enrichment
  46. 2026-07-15 02:00 UTCEPSS rescore
  47. 2026-07-15 02:00 UTCEPSS rescore
  48. 2026-07-14 23:29 UTCGHSA enrichment
  49. 2026-07-14 19:19 UTCGHSA enrichment
  50. 2026-07-14 18:05 UTCCISA KEV update
  51. 2026-07-14 15:09 UTCGHSA enrichment
  52. 2026-07-14 10:59 UTCGHSA enrichment
  53. 2026-07-14 06:49 UTCGHSA enrichment
  54. 2026-07-14 02:40 UTCGHSA enrichment
  55. 2026-07-13 22:30 UTCEPSS rescore
  56. 2026-07-13 22:30 UTCGHSA enrichment
  57. 2026-07-13 18:20 UTCGHSA enrichment
  58. 2026-07-13 17:07 UTCCISA KEV update
  59. 2026-07-13 14:10 UTCGHSA enrichment
  60. 2026-07-13 10:01 UTCGHSA enrichment
  61. 2026-07-13 05:44 UTCGHSA enrichment
  62. 2026-07-13 01:33 UTCGHSA enrichment
  63. 2026-07-12 21:24 UTCGHSA enrichment
  64. 2026-07-12 17:14 UTCGHSA enrichment
  65. 2026-07-12 13:05 UTCGHSA enrichment
  66. 2026-07-12 08:55 UTCGHSA enrichment
  67. 2026-07-12 05:46 UTCEPSS rescore
  68. 2026-07-12 05:46 UTCEPSS rescore
  69. 2026-07-12 04:45 UTCGHSA enrichment
  70. 2026-07-12 00:35 UTCGHSA enrichment
  71. 2026-07-11 20:25 UTCGHSA enrichment
  72. 2026-07-11 16:16 UTCGHSA enrichment
  73. 2026-07-11 12:06 UTCGHSA enrichment
  74. 2026-07-11 08:27 UTCEPSS rescore
  75. 2026-07-11 07:57 UTCGHSA enrichment

Frequently asked(6)

What is CVE-2026-20128?
CVE-2026-20128 is a high vulnerability published on February 25, 2026. A vulnerability in the Data Collection Agent (DCA) feature of Cisco Catalyst SD-WAN Manager could allow an unauthenticated, remote attacker to gain DCA user privileges on an affected system. This vulnerability is due to the presence of a credential file for the DCA user on an affected system. An…
When was CVE-2026-20128 disclosed?
CVE-2026-20128 was first published in the National Vulnerability Database on February 25, 2026, with the most recent update on April 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-20128 actively exploited?
Yes. CISA added CVE-2026-20128 to the Known Exploited Vulnerabilities catalog on April 20, 2026, affecting Cisco Catalyst SD-WAN Manager. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2026-20128?
CVE-2026-20128 has a CVSS v3 base score of 7.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2026-20128?
CVE-2026-20128 affects Cisco Catalyst SD-WAN Manager. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2026-20128?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-20128, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-20128

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