CVE-2026-20262

MEDIUMPre-NVD 6.59.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2026-06-15), indicating real-world exploitation has been confirmed by US federal agencies. a secondary CVSS source baseline 6.5 retained for reference (NVD's own analysis pending). Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, secondary
Trending — 4 sources updated this weekExploited in the wild
6.5
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 8%CVSS: 6.5Exploit: NoneExposed: 0

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

A vulnerability in the web UI of Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, could allow an authenticated, remote attacker to create a file or overwrite any file on the filesystem of an affected system. This vulnerability exists because the affected software does not properly validate user-supplied input during a file upload process. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected API endpoint of the affected system. A successful exploit could allow the attacker to create or overwrite any file on the underlying operating system. This file could later be used to elevate to root. To exploit this vulnerability, the attacker must have valid credentials with at least a lower-privileged, single-task user account.

CVSS v3
6.5
EG Score
9.0(high)
EPSS
94.0%
KEV
⚠ Exploited

Published

June 15, 2026

Last Modified

June 17, 2026

Advisory Details (2)

Auto-updated Jun 15, 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-2026-20262
generic

Cisco Catalyst SD-WAN Manager Arbitrary File Write Vulnerability

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-arbfw-c2rZvQ

Vendor Advisories for CVE-2026-20262(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 62× 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 284 total refreshes for this CVE.

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

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Frequently asked(6)

What is CVE-2026-20262?
CVE-2026-20262 is a medium vulnerability published on June 15, 2026. A vulnerability in the web UI of Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, could allow an authenticated, remote attacker to create a file or overwrite any file on the filesystem of an affected system. This vulnerability exists because the affected software does not properly validate…
When was CVE-2026-20262 disclosed?
CVE-2026-20262 was first published in the National Vulnerability Database on June 15, 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-2026-20262 actively exploited?
Yes. CISA added CVE-2026-20262 to the Known Exploited Vulnerabilities catalog on June 15, 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-2026-20262?
CVE-2026-20262 has a CVSS v3 base score of 6.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2026-20262?
CVE-2026-20262 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-2026-20262?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-20262, 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-2026-20262

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