CVE-2026-36176

HIGHPre-NVD 7.17.1—
EchelonGraph scoreMEDIUM confidence

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2026-06-04. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this weekElevated
7.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.1Exploit: NoneExposed: 0

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

GNCC GP5 v7.1.76 was discovered to store pre-signed Backblaze B2 upload URLs (PUT requests) in plaintext to the serial console. This allows physically-proximate attackers to extract these active tokens to perform unauthorized operations via monitoring the serial UART interface.

CVSS v3
7.1
EG Score
7.1(medium)
EPSS
0.7%
KEV
Not listed

Published

June 4, 2026

Last Modified

July 5, 2026

Advisory Details (2)

Auto-updated Jun 11, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

IoT-Vulnerability-Research-Public/GNCC-GP5-T23/README.md at main · BadChemical/IoT-Vulnerability-Research-Public · GitHub

https://github.com/BadChemical/IoT-Vulnerability-Research-Public/blob/main/GNCC-GP5-T23/README.md
generic

The domain name gp5.com might be for sale. | 0595.com

http://gp5.com

Vendor Advisories for CVE-2026-36176(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 17× in last 7d / 106× 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 137 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-36176?
CVE-2026-36176 is a high vulnerability published on June 4, 2026. GNCC GP5 v7.1.76 was discovered to store pre-signed Backblaze B2 upload URLs (PUT requests) in plaintext to the serial console. This allows physically-proximate attackers to extract these active tokens to perform unauthorized operations via monitoring the serial UART interface.
When was CVE-2026-36176 disclosed?
CVE-2026-36176 was first published in the National Vulnerability Database on June 4, 2026, with the most recent update on July 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-36176 actively exploited?
CVE-2026-36176 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-36176?
CVE-2026-36176 has a CVSS v3.1 base score of 7.1 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-36176?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-36176, 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.

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