CVE-2026-20122

MEDIUMNVD 5.49.0▲
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 5.4 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
5.4
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 7%CVSS: 5.4Exploit: NoneExposed: 0

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

A vulnerability in the API of Cisco Catalyst SD-WAN Manager could allow an authenticated, remote attacker to overwrite arbitrary files on the local file system. To exploit this vulnerability, the attacker must have valid read-only credentials with API access on the affected system. This vulnerability is due to improper file handling on the API interface of an affected system. An attacker could exploit this vulnerability by uploading a malicious file on the local file system. A successful exploit could allow the attacker to overwrite arbitrary files on the affected system and gain vmanage user privileges.

CVSS v3
5.4
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. It is distinct from the 0–10 EG Score, which measures severity.

How it’s computed
Severity90% × 45%
Exploitation100% × 40%
Automatability0% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS
93.5%
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-2026-20122
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-2026-20122(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 63× in last 7d / 233× 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 455 total refreshes for this CVE.

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

Frequently asked(6)

What is CVE-2026-20122?
CVE-2026-20122 is a medium vulnerability published on February 25, 2026. A vulnerability in the API of Cisco Catalyst SD-WAN Manager could allow an authenticated, remote attacker to overwrite arbitrary files on the local file system. To exploit this vulnerability, the attacker must have valid read-only credentials with API access on the affected system. This…
When was CVE-2026-20122 disclosed?
CVE-2026-20122 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-2026-20122 actively exploited?
Yes. CISA added CVE-2026-20122 to the Known Exploited Vulnerabilities catalog on April 20, 2026, affecting Cisco Catalyst SD-WAN Manger. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2026-20122?
CVE-2026-20122 has a CVSS v3 base score of 5.4 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2026-20122?
CVE-2026-20122 affects Cisco Catalyst SD-WAN Manger. 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-2026-20122?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-20122, 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-2026-20122

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