CVE-2021-47974

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-05-16. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.8Exploit: NoneExposed: 0

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

VX Search 13.5.28 contains an unquoted service path vulnerability in both VX Search Server and VX Search Enterprise services that allows local attackers to escalate privileges. Attackers can place malicious executables in unquoted path directories like C:\Program Files\VX Search to execute arbitrary code with LocalSystem privileges when services restart.

CVSS v3
7.8
EG Score
7.8(medium)
EPSS
2.3%
KEV
Not listed

Published

May 16, 2026

Last Modified

May 18, 2026

Advisory Details (3)

Auto-updated May 16, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

VX Search - File Search

https://www.vxsearch.com
generic

VX Search 13.5.28 Unquoted Service Path Privilege Escalation | Advisories | VulnCheck

https://www.vulncheck.com/advisories/vx-search-unquoted-service-path-privilege-escalation
generic🟡 PoC Available

VX Search 13.5.28 - 'Multiple' Unquoted Service Path - Windows local Exploit

https://www.exploit-db.com/exploits/50026

Vendor Advisories for CVE-2021-47974(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 / 75× 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 189 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2021-47974?
CVE-2021-47974 is a high vulnerability published on May 16, 2026. VX Search 13.5.28 contains an unquoted service path vulnerability in both VX Search Server and VX Search Enterprise services that allows local attackers to escalate privileges. Attackers can place malicious executables in unquoted path directories like C:\Program Files\VX Search to execute…
When was CVE-2021-47974 disclosed?
CVE-2021-47974 was first published in the National Vulnerability Database on May 16, 2026, with the most recent update on May 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2021-47974 actively exploited?
CVE-2021-47974 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2021-47974?
CVE-2021-47974 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2021-47974?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-47974, 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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