CVE-2026-20302

MEDIUMPre-NVD 6.16.1—
EchelonGraph scoreMEDIUM confidence

Score 6.1 from GitHub Security Advisory published 2026-08-19. a secondary CVSS source baseline 6.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.1Exploit: 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 USB driver of Cisco RoomOS could allow an unauthenticated, local attacker with physical access to the USB port on an affected device to execute arbitrary code with root privileges. This vulnerability is due to insufficient boundary checks for specific data that is provided through the USB driver. An attacker could exploit this vulnerability by connecting a malicious USB device to an affected device. A successful exploit could allow the attacker to cause a buffer overflow condition on the affected system and execute arbitrary code with root privileges.

CVSS v3
6.1
EG Score
6.1(medium)
EG Risk
28(Track)
EG Risk 28/100SSVC: 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
Severity61% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
8%
KEV
Not listed

Published

August 19, 2026

Last Modified

August 20, 2026

Advisory Details (1)

Auto-updated Aug 19, 2026
No patch confirmed yet.
generic

Cisco RoomOS Stack Overflow Vulnerability

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-roomos-bof-vTMANZgu

Vendor Advisories for CVE-2026-20302(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 19× in last 7d / 82× 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. 2026-09-19 12:43 UTCEG score recompute
  2. 2026-09-19 12:43 UTCGHSA enrichment
  3. 2026-09-18 19:27 UTCEPSS rescore
  4. 2026-09-18 11:46 UTCEG score recompute
  5. 2026-09-18 11:46 UTCGHSA enrichment
  6. 2026-09-17 10:54 UTCEG score recompute
  7. 2026-09-17 10:54 UTCGHSA enrichment
  8. 2026-09-16 14:07 UTCEPSS rescore
  9. 2026-09-16 09:50 UTCEG score recompute
  10. 2026-09-16 09:50 UTCGHSA enrichment
  11. 2026-09-16 05:15 UTCEPSS rescore
  12. 2026-09-15 07:52 UTCEG score recompute
  13. 2026-09-15 07:52 UTCGHSA enrichment
  14. 2026-09-14 07:00 UTCEG score recompute
  15. 2026-09-14 07:00 UTCGHSA enrichment
  16. 2026-09-13 16:47 UTCEPSS rescore
  17. 2026-09-13 06:08 UTCEG score recompute
  18. 2026-09-13 06:08 UTCGHSA enrichment
  19. 2026-09-12 15:01 UTCEPSS rescore
  20. 2026-09-12 05:16 UTCEG score recompute
  21. 2026-09-12 05:16 UTCGHSA enrichment
  22. 2026-09-11 14:52 UTCEPSS rescore
  23. 2026-09-11 09:36 UTCEPSS rescore
  24. 2026-09-11 04:24 UTCEG score recompute
  25. 2026-09-11 04:24 UTCGHSA enrichment
Show 62 more
  1. 2026-09-10 09:34 UTCEPSS rescore
  2. 2026-09-10 03:28 UTCGHSA enrichment
  3. 2026-09-09 02:36 UTCEG score recompute
  4. 2026-09-09 02:36 UTCGHSA enrichment
  5. 2026-09-08 22:00 UTCEPSS rescore
  6. 2026-09-07 16:01 UTCEPSS rescore
  7. 2026-09-07 10:12 UTCEG score recompute
  8. 2026-09-07 10:12 UTCGHSA enrichment
  9. 2026-09-06 13:47 UTCEPSS rescore
  10. 2026-09-06 09:19 UTCEG score recompute
  11. 2026-09-06 09:19 UTCGHSA enrichment
  12. 2026-09-05 08:27 UTCEG score recompute
  13. 2026-09-05 08:27 UTCGHSA enrichment
  14. 2026-09-04 07:35 UTCEG score recompute
  15. 2026-09-04 07:35 UTCGHSA enrichment
  16. 2026-09-04 05:06 UTCEPSS rescore
  17. 2026-09-03 06:34 UTCEG score recompute
  18. 2026-09-03 06:34 UTCGHSA enrichment
  19. 2026-09-02 14:11 UTCEPSS rescore
  20. 2026-09-02 05:41 UTCEG score recompute
  21. 2026-09-02 05:41 UTCGHSA enrichment
  22. 2026-09-01 13:53 UTCEPSS rescore
  23. 2026-09-01 04:39 UTCEPSS rescore
  24. 2026-09-01 04:36 UTCGHSA enrichment
  25. 2026-08-31 03:37 UTCEG score recompute
  26. 2026-08-31 03:37 UTCGHSA enrichment
  27. 2026-08-30 19:17 UTCEPSS rescore
  28. 2026-08-30 02:46 UTCEG score recompute
  29. 2026-08-30 02:45 UTCGHSA enrichment
  30. 2026-08-30 01:22 UTCEPSS rescore
  31. 2026-08-29 01:54 UTCEG score recompute
  32. 2026-08-29 01:54 UTCGHSA enrichment
  33. 2026-08-28 21:41 UTCEPSS rescore
  34. 2026-08-27 22:47 UTCEG score recompute
  35. 2026-08-27 22:47 UTCGHSA enrichment
  36. 2026-08-27 14:25 UTCEPSS rescore
  37. 2026-08-26 21:55 UTCEG score recompute
  38. 2026-08-26 21:55 UTCGHSA enrichment
  39. 2026-08-26 14:46 UTCEPSS rescore
  40. 2026-08-25 21:01 UTCEG score recompute
  41. 2026-08-25 21:01 UTCGHSA enrichment
  42. 2026-08-25 13:48 UTCEPSS rescore
  43. 2026-08-24 20:08 UTCEG score recompute
  44. 2026-08-24 20:08 UTCGHSA enrichment
  45. 2026-08-23 19:15 UTCEG score recompute
  46. 2026-08-23 19:15 UTCGHSA enrichment
  47. 2026-08-23 00:19 UTCEPSS rescore
  48. 2026-08-22 18:23 UTCEG score recompute
  49. 2026-08-22 18:23 UTCGHSA enrichment
  50. 2026-08-21 23:49 UTCEPSS rescore
  51. 2026-08-21 17:31 UTCEG score recompute
  52. 2026-08-21 17:31 UTCGHSA enrichment
  53. 2026-08-20 22:55 UTCEPSS rescore
  54. 2026-08-20 16:37 UTCEG score recompute
  55. 2026-08-20 16:37 UTCGHSA enrichment
  56. 2026-08-20 16:07 UTCEG score recompute
  57. 2026-08-20 16:07 UTCGHSA enrichment
  58. 2026-08-20 13:28 UTCEG score recompute
  59. 2026-08-20 13:27 UTCGHSA enrichment
  60. 2026-08-19 17:23 UTCEG score recompute
  61. 2026-08-19 16:22 UTCEG score recompute
  62. 2026-08-19 16:22 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-20302?
CVE-2026-20302 is a medium vulnerability published on August 19, 2026. A vulnerability in the USB driver of Cisco RoomOS could allow an unauthenticated, local attacker with physical access to the USB port on an affected device to execute arbitrary code with root privileges. This vulnerability is due to insufficient boundary checks for specific data that is…
When was CVE-2026-20302 disclosed?
CVE-2026-20302 was first published in the National Vulnerability Database on August 19, 2026, with the most recent update on August 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-20302 actively exploited?
CVE-2026-20302 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 91.7% of all scored CVEs.
What is the CVSS score of CVE-2026-20302?
CVE-2026-20302 has a CVSS v3 base score of 6.1 (NVD).
How do I remediate CVE-2026-20302?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-20302, 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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