CVE-2026-20160

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-04-01. a secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: None knownExposed: 0

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

A vulnerability in Cisco Smart Software Manager On-Prem (SSM On-Prem) could allow an unauthenticated, remote attacker to execute arbitrary commands on the underlying operating system of an affected SSM On-Prem host. This vulnerability is due to the unintentional exposure of an internal service. An attacker could exploit this vulnerability by sending a crafted request to the API of the exposed service. A successful exploit could allow the attacker to execute commands on the underlying operating system with root-level privileges.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
59(Track)
EG Risk 59/100SSVC: 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
Severity98% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
58%
KEV
Not listed

Published

April 1, 2026

Last Modified

July 1, 2026

Advisory Details (1)

Auto-updated Sep 5, 2026
No patch confirmed yet.
generic

Cisco Smart Software Manager On-Prem Arbitrary Command Execution Vulnerability

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ssm-cli-execution-cHUcWuNr

Vendor Advisories for CVE-2026-20160(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 6× in last 7d / 36× 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 218 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-20160?
CVE-2026-20160 is a critical vulnerability published on April 1, 2026. A vulnerability in Cisco Smart Software Manager On-Prem (SSM On-Prem) could allow an unauthenticated, remote attacker to execute arbitrary commands on the underlying operating system of an affected SSM On-Prem host. This vulnerability is due to the unintentional exposure of an internal…
When was CVE-2026-20160 disclosed?
CVE-2026-20160 was first published in the National Vulnerability Database on April 1, 2026, with the most recent update on July 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-20160 actively exploited?
CVE-2026-20160 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 42.0% of all scored CVEs.
What is the CVSS score of CVE-2026-20160?
CVE-2026-20160 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-20160?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-20160, 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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