CVE-2026-10046

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-06-02. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

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

Bitdefender Napoca bare-metal hypervisor contains an out-of-bounds write vulnerability in the BIOS INT 0x15 / E820 memory map handler, implemented in napoca/guests/bios_handlers.c. The handler computes a destination offset into the guest RealModeMemory buffer from guest-controlled ES and EDI register values without validating that the resulting address remains within the 1MB RealModeMemory allocation. A malicious guest operating in real mode can trigger the issue by invoking INT 0x15 with AX=0xE820, EDX=0x534D4150, ECX greater than or equal to 20, EBX=0, ES=0xFFFF, and EDI=0xFFFF. This can cause a write of up to 20 bytes past the end of the RealModeMemory buffer into the hypervisor heap. The product is end-of-life and unsupported when assigned.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
35(Track)
EG Risk 35/100SSVC: 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
Severity78% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
2%
KEV
Not listed

Published

June 2, 2026

Last Modified

July 22, 2026

References (1)

Vendor Advisories for CVE-2026-10046(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 8× 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 230 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-10046?
CVE-2026-10046 is a high vulnerability published on June 2, 2026. Bitdefender Napoca bare-metal hypervisor contains an out-of-bounds write vulnerability in the BIOS INT 0x15 / E820 memory map handler, implemented in napoca/guests/bios_handlers.c. The handler computes a destination offset into the guest RealModeMemory buffer from guest-controlled ES and EDI…
When was CVE-2026-10046 disclosed?
CVE-2026-10046 was first published in the National Vulnerability Database on June 2, 2026, with the most recent update on July 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-10046 actively exploited?
CVE-2026-10046 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 98.1% of all scored CVEs.
What is the CVSS score of CVE-2026-10046?
CVE-2026-10046 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-10046?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-10046, 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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