CVE-2026-35547

HIGHNVD 8.19.1▲
EchelonGraph scoreMEDIUM confidence

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-04-30. NVD baseline CVSS 8.1; sources differ by 1.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
8.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.1Exploit: NoneExposed: 0

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

When processing the header of an incoming message, libnv failed to properly validate the message size.

The lack of validation allows a malicious program to write outside the bounds of a heap allocation. This can trigger a crash or system panic, and it may be possible for an unprivileged user to exploit the bug to elevate their privileges.

CVSS v3
8.1
EG Score
9.1(medium)
EPSS
23.5%
KEV
Not listed

Published

April 30, 2026

Last Modified

May 1, 2026

Advisory Details (1)

Auto-updated Apr 30, 2026
No patch confirmed yet.
generic
https://security.freebsd.org/advisories/FreeBSD-SA-26:17.libnv.asc

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 8× 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 215 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-35547?
CVE-2026-35547 is a high vulnerability published on April 30, 2026. When processing the header of an incoming message, libnv failed to properly validate the message size. The lack of validation allows a malicious program to write outside the bounds of a heap allocation. This can trigger a crash or system panic, and it may be possible for an unprivileged user to…
When was CVE-2026-35547 disclosed?
CVE-2026-35547 was first published in the National Vulnerability Database on April 30, 2026, with the most recent update on May 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-35547 actively exploited?
CVE-2026-35547 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 23.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-35547?
CVE-2026-35547 has a CVSS v3 base score of 8.1 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.1.
How do I remediate CVE-2026-35547?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-35547, 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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