CVE-2026-9393

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-05-26. NVD baseline CVSS 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.8Exploit: Elevated riskExposed: 0

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

A vulnerability was found in H3C Magic B0 up to 100R002. This affects the function Edit_BasicSSID_5G of the file /goform/aspForm. Performing a manipulation of the argument param results in buffer overflow. The attack may be initiated remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
56(Track*)
EG Risk 56/100SSVC: 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
Severity88% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
1%
EPSS %ILE
55%
KEV
Not listed

Published

May 24, 2026

Last Modified

July 23, 2026

Advisory Details (1)

Auto-updated Jun 2, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

H3C Magic B0 Router `/goform/aspForm` Edit_BasicSSID_5G Buffer Overflow Vulnerability · Issue #25 · alc9700jmo/CVE · GitHub

https://github.com/alc9700jmo/CVE/issues/25

Vendor Advisories for CVE-2026-9393(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 5× in last 7d / 26× 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 220 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-9393?
CVE-2026-9393 is a high vulnerability published on May 24, 2026. A vulnerability was found in H3C Magic B0 up to 100R002. This affects the function EditBasicSSID5G of the file /goform/aspForm. Performing a manipulation of the argument param results in buffer overflow. The attack may be initiated remotely. The exploit has been made public and could be used. The…
When was CVE-2026-9393 disclosed?
CVE-2026-9393 was first published in the National Vulnerability Database on May 24, 2026, with the most recent update on July 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-9393 actively exploited?
CVE-2026-9393 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 45.1% of all scored CVEs.
What is the CVSS score of CVE-2026-9393?
CVE-2026-9393 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-9393?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-9393, 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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