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
Trending — 3 sources updated this weekElevated
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: Elevated riskExposed: 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)
EG Risk
51(Track*)
EG Risk 51/100SSVC: 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%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
0%
EPSS %ILE
2%
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 10× in last 7d / 68× 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 236 total refreshes for this CVE.

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

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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 0% probability of exploitation in the next 30 days, which ranks it in the top 97.9% of all scored CVEs.
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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