CVE-2026-20128

CRITICALNVD 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
9.0EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 7%CVSS: 7.5Exploit: cisa kev · ssvc activeExposed: 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)
EG Risk
81(Attend)
EG Risk 81/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity90% × 45%
Exploitation100% × 40%
Automatability0% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
7%
EPSS %ILE
94%
KEV
⚠ Exploited

Published

February 25, 2026

Last Modified

June 17, 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 54× in last 7d / 241× 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 903 total refreshes for this CVE.

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

Frequently asked(6)

What is CVE-2026-20128?
CVE-2026-20128 is a critical 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 June 17, 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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