CVE-2026-20220

MEDIUMPre-NVD 6.36.3—
EchelonGraph scoreHIGH confidence

Score 6.3 from GitHub Security Advisory published 2026-06-17. a secondary CVSS source baseline 6.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
6.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.3Exploit: 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-based management interface of Cisco Crosswork Network Controller could allow an authenticated, remote attacker to execute arbitrary commands on an affected device. This vulnerability is due to insufficient input validation in the configuration template engine of the web-based management interface. An attacker could exploit this vulnerability by sending a crafted request to the affected device. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system in limited areas of the file system. This vulnerability affects only areas of the operating system for which the template user has write permissions.  To exploit this vulnerability, the attacker must have valid template user credentials with write permissions. Template users with read permissions cannot exploit this vulnerability. 

CVSS v3
6.3
EG Score
6.3(high)
EG Risk
—
EPSS
16.8%
KEV
Not listed

Published

June 17, 2026

Last Modified

June 22, 2026

Advisory Details (1)

Auto-updated Jun 17, 2026
No patch confirmed yet.
generic

Cisco Crosswork Network Controller Server-Side Template Injection Vulnerability

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cnc-inj-QNMeEmxk

Vendor Advisories for CVE-2026-20220(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 13× in last 7d / 66× 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.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-20220?
CVE-2026-20220 is a medium vulnerability published on June 17, 2026. A vulnerability in the web-based management interface of Cisco Crosswork Network Controller could allow an authenticated, remote attacker to execute arbitrary commands on an affected device. This vulnerability is due to insufficient input validation in the configuration template engine of…
When was CVE-2026-20220 disclosed?
CVE-2026-20220 was first published in the National Vulnerability Database on June 17, 2026, with the most recent update on June 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-20220 actively exploited?
CVE-2026-20220 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 16.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-20220?
CVE-2026-20220 has a CVSS v3 base score of 6.3 (NVD).
How do I remediate CVE-2026-20220?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-20220, 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-2026-20220

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