CVE-2026-8764

HIGHNVD 7.27.2—
EchelonGraph scoreMEDIUM confidence

Score 7.2 from GitHub Security Advisory (severity: HIGH) published 2026-05-18. NVD baseline CVSS 7.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
7.2
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.2Exploit: NoneExposed: 0

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

A security vulnerability has been detected in H3C Magic B3 up to 100R002. This affects the function UpdateWanParams of the file /goform/aspForm. Such manipulation of the argument param leads to buffer overflow. The attack may be performed from remote. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS v3
7.2
EG Score
7.2(medium)
EPSS
38.3%
KEV
Not listed

Published

May 17, 2026

Last Modified

May 18, 2026

Advisory Details (1)

Auto-updated May 18, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

Buffer Overflow Vulnerability in H3C Magic B3 Router /goform/aspForm Interface · Issue #1 · yyyy0031/CVE · GitHub

https://github.com/yyyy0031/CVE/issues/1

Vendor Advisories for CVE-2026-8764(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 51× 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 140 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-8764?
CVE-2026-8764 is a high vulnerability published on May 17, 2026. A security vulnerability has been detected in H3C Magic B3 up to 100R002. This affects the function UpdateWanParams of the file /goform/aspForm. Such manipulation of the argument param leads to buffer overflow. The attack may be performed from remote. The exploit has been disclosed publicly and may…
When was CVE-2026-8764 disclosed?
CVE-2026-8764 was first published in the National Vulnerability Database on May 17, 2026, with the most recent update on May 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-8764 actively exploited?
CVE-2026-8764 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 38.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-8764?
CVE-2026-8764 has a CVSS v3 base score of 7.2 (NVD).
How do I remediate CVE-2026-8764?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-8764, 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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