CVE-2020-37253

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM 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(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
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 7× in last 7d / 78× 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. 2026-07-23 01:53 UTCEG score recompute
  2. 2026-07-22 22:39 UTCEG score recompute
  3. 2026-07-22 14:05 UTCEPSS rescore
  4. 2026-07-19 14:28 UTCEPSS rescore
  5. 2026-07-19 14:28 UTCEPSS rescore
  6. 2026-07-16 21:21 UTCGHSA enrichment
  7. 2026-07-16 16:59 UTCEPSS rescore
  8. 2026-07-16 09:19 UTCGHSA enrichment
  9. 2026-07-15 21:16 UTCGHSA enrichment
  10. 2026-07-15 16:55 UTCEPSS rescore
  11. 2026-07-15 16:55 UTCEPSS rescore
  12. 2026-07-15 09:13 UTCGHSA enrichment
  13. 2026-07-14 20:57 UTCGHSA enrichment
  14. 2026-07-14 08:55 UTCGHSA enrichment
  15. 2026-07-13 22:27 UTCEPSS rescore
  16. 2026-07-13 22:27 UTCEPSS rescore
  17. 2026-07-13 20:27 UTCGHSA enrichment
  18. 2026-07-13 08:25 UTCGHSA enrichment
  19. 2026-07-12 20:17 UTCGHSA enrichment
  20. 2026-07-12 08:15 UTCGHSA enrichment
  21. 2026-07-12 05:44 UTCEPSS rescore
  22. 2026-07-11 20:13 UTCGHSA enrichment
  23. 2026-07-11 08:25 UTCEPSS rescore
  24. 2026-07-11 08:25 UTCEPSS rescore
  25. 2026-07-11 08:11 UTCGHSA enrichment
Show 64 more
  1. 2026-07-10 20:09 UTCGHSA enrichment
  2. 2026-07-10 08:04 UTCGHSA enrichment
  3. 2026-07-09 20:02 UTCGHSA enrichment
  4. 2026-07-09 19:07 UTCEPSS rescore
  5. 2026-07-09 07:58 UTCGHSA enrichment
  6. 2026-07-08 19:56 UTCGHSA enrichment
  7. 2026-07-08 15:12 UTCEPSS rescore
  8. 2026-07-08 07:45 UTCGHSA enrichment
  9. 2026-07-07 19:44 UTCGHSA enrichment
  10. 2026-07-07 13:43 UTCEPSS rescore
  11. 2026-07-07 07:01 UTCGHSA enrichment
  12. 2026-07-06 18:58 UTCGHSA enrichment
  13. 2026-07-06 06:31 UTCGHSA enrichment
  14. 2026-07-06 02:21 UTCEPSS rescore
  15. 2026-07-06 02:21 UTCEPSS rescore
  16. 2026-07-05 18:29 UTCGHSA enrichment
  17. 2026-07-05 06:27 UTCGHSA enrichment
  18. 2026-07-04 18:25 UTCGHSA enrichment
  19. 2026-07-04 06:29 UTCEPSS rescore
  20. 2026-07-04 06:29 UTCEPSS rescore
  21. 2026-07-04 06:02 UTCGHSA enrichment
  22. 2026-07-03 17:46 UTCGHSA enrichment
  23. 2026-07-03 05:44 UTCGHSA enrichment
  24. 2026-07-02 17:41 UTCGHSA enrichment
  25. 2026-07-02 05:30 UTCGHSA enrichment
  26. 2026-07-01 17:27 UTCGHSA enrichment
  27. 2026-07-01 05:25 UTCGHSA enrichment
  28. 2026-06-30 23:20 UTCEPSS rescore
  29. 2026-06-30 23:20 UTCEPSS rescore
  30. 2026-06-30 17:18 UTCGHSA enrichment
  31. 2026-06-30 05:11 UTCGHSA enrichment
  32. 2026-06-29 17:03 UTCGHSA enrichment
  33. 2026-06-29 04:59 UTCGHSA enrichment
  34. 2026-06-28 16:54 UTCGHSA enrichment
  35. 2026-06-28 04:54 UTCEPSS rescore
  36. 2026-06-28 04:54 UTCEPSS rescore
  37. 2026-06-28 04:52 UTCGHSA enrichment
  38. 2026-06-27 16:50 UTCGHSA enrichment
  39. 2026-06-27 04:48 UTCGHSA enrichment
  40. 2026-06-27 03:06 UTCEPSS rescore
  41. 2026-06-27 03:06 UTCEPSS rescore
  42. 2026-06-26 16:44 UTCGHSA enrichment
  43. 2026-06-26 04:42 UTCGHSA enrichment
  44. 2026-06-25 16:38 UTCGHSA enrichment
  45. 2026-06-25 13:48 UTCEPSS rescore
  46. 2026-06-25 04:36 UTCGHSA enrichment
  47. 2026-06-24 16:34 UTCGHSA enrichment
  48. 2026-06-24 14:03 UTCEPSS rescore
  49. 2026-06-24 14:03 UTCEPSS rescore
  50. 2026-06-24 04:31 UTCGHSA enrichment
  51. 2026-06-23 21:31 UTCEPSS rescore
  52. 2026-06-23 21:31 UTCEPSS rescore
  53. 2026-06-23 16:28 UTCGHSA enrichment
  54. 2026-06-23 04:24 UTCGHSA enrichment
  55. 2026-06-22 19:38 UTCNVD updateCVSS v4 → 8.5
  56. 2026-06-22 16:21 UTCGHSA enrichment
  57. 2026-06-22 04:16 UTCGHSA enrichment
  58. 2026-06-21 16:13 UTCGHSA enrichment
  59. 2026-06-21 16:11 UTCGHSA enrichment
  60. 2026-06-21 04:09 UTCGHSA enrichment
  61. 2026-06-20 16:06 UTCGHSA enrichment
  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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