CVE-2026-74238

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-17. A secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.5EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 7.5Exploit: None knownExposed services: Not assessed

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

TIER IV Nebula through 1.2.0 contains an out-of-bounds read vulnerability in the Vlp32Decoder::unpack() function that allows unauthenticated remote attackers to cause the decoder to read past the end of a received UDP buffer into adjacent heap memory by sending a short UDP datagram. Attackers can send a malformed datagram to the Velodyne UDP sensor port, which lacks sender-address restrictions present in other drivers, causing fabricated points derived from heap memory contents to be silently published into downstream PointCloud2 messages consumed by Autoware nodes.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
49
EG Risk 49/100CISA SSVC

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
Severity75% × 45%
Exploitation0% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
0.5%
EPSS %ILE
39th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 17, 2026

Last Modified

September 24, 2026

Advisory Details (2)

Auto-updated Aug 17, 2026
No patch confirmed yet.
generic

TIER IV Nebula 1.2.0 Heap Out-of-Bounds Read via VLP32 UDP Decoder | Advisories | VulnCheck

https://www.vulncheck.com/advisories/tier-iv-nebula-heap-out-of-bounds-read-via-vlp32-udp-decoder
generic

Out-of-bounds read in Vlp32Decoder::unpack(): incoming UDP datagram cast to a fixed 1206-byte packet struct with no length check (CVE-2026-74238) · Issue #488 · tier4/nebula · GitHub

https://github.com/tier4/nebula/issues/488

Vendor Advisories for CVE-2026-74238(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 21× in last 7d / 98× 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 177 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-74238?
CVE-2026-74238 is a high vulnerability published on August 17, 2026. TIER IV Nebula through 1.2.0 contains an out-of-bounds read vulnerability in the Vlp32Decoder::unpack() function that allows unauthenticated remote attackers to cause the decoder to read past the end of a received UDP buffer into adjacent heap memory by sending a short UDP datagram. Attackers can…
When was CVE-2026-74238 disclosed?
CVE-2026-74238 was first published on August 17, 2026, with the most recent update on September 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-74238 actively exploited?
CVE-2026-74238 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (39th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-74238?
CVE-2026-74238 has a CVSS base score of 7.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-74238?
No fix for CVE-2026-74238 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-74238 are linked in the Vendor Advisories panel on this page.

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