CVE-2026-39929

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-05-29. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.5Exploit: None knownExposed: 0

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

Lakeside SysTrack Agent versions prior to 11.2.1.28, 11.3.0.38, 11.4.0.24, 11.5.0.15 contain an out-of-bounds read vulnerability in the Command ID 30 UDP packet handler that allows remote attackers to crash the application by sending a specially crafted UDP packet. Attackers can send a malformed packet with an invalid memory address at offset 0x4 in the payload to trigger an access violation and cause a denial of service.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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
Severity75% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
71%
KEV
Not listed

Published

May 28, 2026

Last Modified

July 21, 2026

Advisory Details (5)

Auto-updated May 29, 2026
No patch confirmed yet.
generic

Lakeside SysTrack Agent LsiAgent.exe Out-of-Bounds Read via UDP | Advisories | VulnCheck

https://www.vulncheck.com/advisories/lakeside-systrack-agent-lsiagent-exe-out-of-bounds-read-via-udp
generic

11.5.0.xxx Hotfix Agent Release Notes

https://documentation.lakesidesoftware.com/docs/1150xxx-hotfix-agent-release-notes
generic

11.4.0.xxx Hotfix Agent Release Notes

https://documentation.lakesidesoftware.com/docs/1140xxx-hotfix-agent-release-notes
generic

11.3.0.xxx Hotfix Agent Release Notes

https://documentation.lakesidesoftware.com/docs/1130xxx-hotfix-agent-release-notes
generic

11.2.1.28 Hotfix Agent Release Notes

https://documentation.lakesidesoftware.com/docs/112128-hotfix-agent-release-notes

Vendor Advisories for CVE-2026-39929(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 6× in last 7d / 67× 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 232 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-39929?
CVE-2026-39929 is a high vulnerability published on May 28, 2026. Lakeside SysTrack Agent versions prior to 11.2.1.28, 11.3.0.38, 11.4.0.24, 11.5.0.15 contain an out-of-bounds read vulnerability in the Command ID 30 UDP packet handler that allows remote attackers to crash the application by sending a specially crafted UDP packet. Attackers can send a malformed…
When was CVE-2026-39929 disclosed?
CVE-2026-39929 was first published in the National Vulnerability Database on May 28, 2026, with the most recent update on July 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-39929 actively exploited?
CVE-2026-39929 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 29.3% of all scored CVEs.
What is the CVSS score of CVE-2026-39929?
CVE-2026-39929 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-39929?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-39929, 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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