CVE-2020-37253

HIGHPre-NVD 7.87.8—
EchelonGraph scoreHIGH confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-06-19. a secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
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.

Winstep 18.06.0096 contains an unquoted service path vulnerability in the Winstep Xtreme Service that allows local attackers to escalate privileges. Attackers can place malicious executables in the Program Files directory to be executed with LocalSystem privileges when the service starts.

CVSS v3
7.8
EG Score
7.8(high)
EPSS
1.5%
KEV
Not listed

Published

June 19, 2026

Last Modified

June 23, 2026

Advisory Details (2)

Auto-updated Jun 22, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

Winstep 18.06.0096 Unquoted Service Path Privilege Escalation | Advisories | VulnCheck

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

Winstep 18.06.0096 - 'Xtreme Service' Unquoted Service Path - Windows local Exploit

https://www.exploit-db.com/exploits/49004

Vendor Advisories for CVE-2020-37253(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 34× in last 7d / 89× 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.

  1. 2026-07-07 07:01 UTCEG score recompute
  2. 2026-07-07 07:01 UTCGHSA enrichment
  3. 2026-07-06 18:59 UTCEG score recompute
  4. 2026-07-06 18:58 UTCGHSA enrichment
  5. 2026-07-06 06:32 UTCEG score recompute
  6. 2026-07-06 06:31 UTCGHSA enrichment
  7. 2026-07-06 02:21 UTCEPSS rescore
  8. 2026-07-06 02:21 UTCEPSS rescore
  9. 2026-07-05 18:29 UTCEG score recompute
  10. 2026-07-05 18:29 UTCGHSA enrichment
  11. 2026-07-05 06:27 UTCEG score recompute
  12. 2026-07-05 06:27 UTCGHSA enrichment
  13. 2026-07-04 18:25 UTCEG score recompute
  14. 2026-07-04 18:25 UTCGHSA enrichment
  15. 2026-07-04 06:29 UTCEPSS rescore
  16. 2026-07-04 06:29 UTCEPSS rescore
  17. 2026-07-04 06:02 UTCEG score recompute
  18. 2026-07-04 06:02 UTCGHSA enrichment
  19. 2026-07-03 17:46 UTCEG score recompute
  20. 2026-07-03 17:46 UTCGHSA enrichment
  21. 2026-07-03 05:45 UTCEG score recompute
  22. 2026-07-03 05:44 UTCGHSA enrichment
  23. 2026-07-02 17:41 UTCEG score recompute
  24. 2026-07-02 17:41 UTCGHSA enrichment
  25. 2026-07-02 05:31 UTCEG score recompute
Show 64 more
  1. 2026-07-02 05:30 UTCGHSA enrichment
  2. 2026-07-01 17:28 UTCEG score recompute
  3. 2026-07-01 17:27 UTCGHSA enrichment
  4. 2026-07-01 05:25 UTCEG score recompute
  5. 2026-07-01 05:25 UTCGHSA enrichment
  6. 2026-06-30 23:20 UTCEPSS rescore
  7. 2026-06-30 23:20 UTCEPSS rescore
  8. 2026-06-30 17:18 UTCEG score recompute
  9. 2026-06-30 17:18 UTCGHSA enrichment
  10. 2026-06-30 05:11 UTCEG score recompute
  11. 2026-06-30 05:11 UTCGHSA enrichment
  12. 2026-06-29 17:03 UTCEG score recompute
  13. 2026-06-29 17:03 UTCGHSA enrichment
  14. 2026-06-29 05:00 UTCEG score recompute
  15. 2026-06-29 04:59 UTCGHSA enrichment
  16. 2026-06-28 16:54 UTCEG score recompute
  17. 2026-06-28 16:54 UTCGHSA enrichment
  18. 2026-06-28 04:54 UTCEPSS rescore
  19. 2026-06-28 04:54 UTCEPSS rescore
  20. 2026-06-28 04:52 UTCEG score recompute
  21. 2026-06-28 04:52 UTCGHSA enrichment
  22. 2026-06-27 16:50 UTCEG score recompute
  23. 2026-06-27 16:50 UTCGHSA enrichment
  24. 2026-06-27 04:48 UTCEG score recompute
  25. 2026-06-27 04:48 UTCGHSA enrichment
  26. 2026-06-27 03:06 UTCEPSS rescore
  27. 2026-06-27 03:06 UTCEPSS rescore
  28. 2026-06-26 16:44 UTCEG score recompute
  29. 2026-06-26 16:44 UTCGHSA enrichment
  30. 2026-06-26 04:42 UTCEG score recompute
  31. 2026-06-26 04:42 UTCGHSA enrichment
  32. 2026-06-25 16:38 UTCEG score recompute
  33. 2026-06-25 16:38 UTCGHSA enrichment
  34. 2026-06-25 13:48 UTCEPSS rescore
  35. 2026-06-25 04:36 UTCEG score recompute
  36. 2026-06-25 04:36 UTCGHSA enrichment
  37. 2026-06-24 16:34 UTCEG score recompute
  38. 2026-06-24 16:34 UTCGHSA enrichment
  39. 2026-06-24 14:03 UTCEPSS rescore
  40. 2026-06-24 14:03 UTCEPSS rescore
  41. 2026-06-24 04:31 UTCEG score recompute
  42. 2026-06-24 04:31 UTCGHSA enrichment
  43. 2026-06-23 21:31 UTCEPSS rescore
  44. 2026-06-23 21:31 UTCEPSS rescore
  45. 2026-06-23 16:28 UTCEG score recompute
  46. 2026-06-23 16:28 UTCGHSA enrichment
  47. 2026-06-23 04:24 UTCEG score recompute
  48. 2026-06-23 04:24 UTCGHSA enrichment
  49. 2026-06-22 19:38 UTCNVD updateCVSS v4 → 8.5
  50. 2026-06-22 16:21 UTCEG score recompute
  51. 2026-06-22 16:21 UTCGHSA enrichment
  52. 2026-06-22 04:16 UTCEG score recompute
  53. 2026-06-22 04:16 UTCGHSA enrichment
  54. 2026-06-21 16:14 UTCEG score recompute
  55. 2026-06-21 16:13 UTCGHSA enrichment
  56. 2026-06-21 16:11 UTCGHSA enrichment
  57. 2026-06-21 04:09 UTCEG score recompute
  58. 2026-06-21 04:09 UTCGHSA enrichment
  59. 2026-06-20 16:06 UTCEG score recompute
  60. 2026-06-20 16:06 UTCGHSA enrichment
  61. 2026-06-20 04:01 UTCEG score recompute
  62. 2026-06-20 04:01 UTCGHSA enrichment
  63. 2026-06-19 15:58 UTCEG score recompute
  64. 2026-06-19 15:57 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2020-37253?
CVE-2020-37253 is a high vulnerability published on June 19, 2026. Winstep 18.06.0096 contains an unquoted service path vulnerability in the Winstep Xtreme Service that allows local attackers to escalate privileges. Attackers can place malicious executables in the Program Files directory to be executed with LocalSystem privileges when the service starts.
When was CVE-2020-37253 disclosed?
CVE-2020-37253 was first published in the National Vulnerability Database on June 19, 2026, with the most recent update on June 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2020-37253 actively exploited?
CVE-2020-37253 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2020-37253?
CVE-2020-37253 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2020-37253?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-37253, 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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