CVE-2026-20220

MEDIUMPre-NVD 6.36.3—
EchelonGraph scoreMEDIUM 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
Trending — 3 sources updated this week
6.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.3Exploit: 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 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(medium)
EG Risk
33(Track)
EG Risk 33/100SSVC: 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
Severity63% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
17%
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 6× in last 7d / 35× 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 187 total refreshes for this CVE.

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

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 0% probability of exploitation in the next 30 days, which ranks it in the top 82.9% of all scored CVEs.
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

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