CVE-2026-20223

CRITICALNVD 10.010.0—
EchelonGraph scoreMEDIUM confidence

Score 10.0 from GitHub Security Advisory (severity: CRITICAL) published 2026-05-20. NVD baseline CVSS 10.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
10.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 10.0Exploit: None knownExposed: 0

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

A vulnerability in the access validation of internal REST APIs of Cisco Secure Workload could allow an unauthenticated, remote attacker to access site resources with the privileges of the Site Admin role. This vulnerability is due to insufficient validation and authentication when accessing REST API endpoints. An attacker could exploit this vulnerability if they are able to send a crafted API request to an affected endpoint. A successful exploit could allow the attacker to read sensitive information and make configuration changes across tenant boundaries with the privileges of the Site Admin user. 

CVSS v3
10.0
EG Score
10.0(medium)
EG Risk
60(Track)
EG Risk 60/100SSVC: Track

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
Severity100% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
54%
KEV
Not listed

Published

May 20, 2026

Last Modified

July 23, 2026

Advisory Details (1)

Auto-updated Jul 24, 2026
No patch confirmed yet.
generic

Cisco Secure Workload Unauthorized API Access Vulnerability

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-csw-pnbsa-g8WEnuy

Vendor Advisories for CVE-2026-20223(2)

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 14× in last 7d / 55× 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 223 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-20223?
CVE-2026-20223 is a critical vulnerability published on May 20, 2026. A vulnerability in the access validation of internal REST APIs of Cisco Secure Workload could allow an unauthenticated, remote attacker to access site resources with the privileges of the Site Admin role. This vulnerability is due to insufficient validation and authentication when…
When was CVE-2026-20223 disclosed?
CVE-2026-20223 was first published in the National Vulnerability Database on May 20, 2026, with the most recent update on July 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-20223 actively exploited?
CVE-2026-20223 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 46.1% of all scored CVEs.
What is the CVSS score of CVE-2026-20223?
CVE-2026-20223 has a CVSS v3 base score of 10.0 (NVD).
How do I remediate CVE-2026-20223?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-20223, 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

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