CVE-2026-49416

HIGHPre-NVD 7.87.8
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-06-27. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
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.

The CONS_HISTORY ioctl handler did not adequately validate the requested history size. A large value caused an integer overflow in the buffer size calculation, resulting in a heap allocation smaller than expected. Subsequent initialization of the buffer wrote beyond the end of the allocation.

An unprivileged local user with access to a vt(4) device can trigger an out-of-bounds write in the kernel, potentially escalating privileges.

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
5%
KEV
Not listed

Published

June 27, 2026

Last Modified

July 1, 2026

Advisory Details (1)

Auto-updated Jun 29, 2026
No patch confirmed yet.

Vendor Advisories for CVE-2026-49416(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 6× in last 7d / 64× 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 198 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-49416?
CVE-2026-49416 is a high vulnerability published on June 27, 2026. The CONS_HISTORY ioctl handler did not adequately validate the requested history size. A large value caused an integer overflow in the buffer size calculation, resulting in a heap allocation smaller than expected. Subsequent initialization of the buffer wrote beyond the end of the allocation. An…
When was CVE-2026-49416 disclosed?
CVE-2026-49416 was first published in the National Vulnerability Database on June 27, 2026, with the most recent update on July 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-49416 actively exploited?
CVE-2026-49416 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 95.2% of all scored CVEs.
What is the CVSS score of CVE-2026-49416?
CVE-2026-49416 has a CVSS v3.1 base score of 7.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-49416?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-49416, 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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