CVE-2025-40540

CRITICALNVD 7.29.1▲
EchelonGraph scoreMEDIUM confidence

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-02-24. NVD baseline CVSS 7.2; sources differ by 1.9.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.2Exploit: None knownExposed: 0

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

A type confusion vulnerability exists in Serv-U which when exploited, gives a malicious actor the ability to execute arbitrary native code as privileged account.

This issue requires administrative privileges to abuse. On Windows deployments, the risk is scored as a medium because services frequently run under less-privileged service accounts by default.

CVSS v3
7.2
EG Score
9.1(medium)
EG Risk
46(Track)
EG Risk 46/100SSVC: 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
Severity91% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
38%
KEV
Not listed

Published

February 24, 2026

Last Modified

June 17, 2026

Advisory Details (2)

Auto-updated Aug 4, 2026
No patch confirmed yet.
generic

SolarWinds Trust Center Security Advisories | CVE-2025-40540

https://www.solarwinds.com/trust-center/security-advisories/CVE-2025-40540
generic

Serv-U 15.5.4 release notes

https://documentation.solarwinds.com/en/success_center/servu/content/release_notes/servu_15-5-4_release_notes.htm

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 5× in last 7d / 25× 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. 2026-09-18 19:27 UTCEPSS rescore
  2. 2026-09-17 19:29 UTCEPSS rescore
  3. 2026-09-16 14:07 UTCEPSS rescore
  4. 2026-09-16 05:14 UTCEPSS rescore
  5. 2026-09-13 16:46 UTCEPSS rescore
  6. 2026-09-12 15:00 UTCEPSS rescore
  7. 2026-09-11 14:52 UTCEPSS rescore
  8. 2026-09-11 09:35 UTCEPSS rescore
  9. 2026-09-10 09:33 UTCEPSS rescore
  10. 2026-09-08 21:59 UTCEPSS rescore
  11. 2026-09-07 16:00 UTCEPSS rescore
  12. 2026-09-06 13:46 UTCEPSS rescore
  13. 2026-09-04 05:05 UTCEPSS rescore
  14. 2026-09-02 14:11 UTCEPSS rescore
  15. 2026-09-01 13:53 UTCEPSS rescore
  16. 2026-09-01 04:38 UTCEPSS rescore
  17. 2026-08-30 19:16 UTCEPSS rescore
  18. 2026-08-30 01:21 UTCEPSS rescore
  19. 2026-08-28 21:40 UTCEPSS rescore
  20. 2026-08-27 14:24 UTCEPSS rescore
  21. 2026-08-26 14:45 UTCEPSS rescore
  22. 2026-08-25 13:48 UTCEPSS rescore
  23. 2026-08-23 00:18 UTCEPSS rescore
  24. 2026-08-21 23:48 UTCEPSS rescore
  25. 2026-08-20 22:54 UTCEPSS rescore
Show 57 more
  1. 2026-08-19 17:03 UTCEPSS rescore
  2. 2026-08-19 17:03 UTCEPSS rescore
  3. 2026-08-18 13:47 UTCEPSS rescore
  4. 2026-08-17 13:46 UTCEPSS rescore
  5. 2026-08-16 14:55 UTCEPSS rescore
  6. 2026-08-16 02:13 UTCEPSS rescore
  7. 2026-08-15 01:30 UTCEG score recompute
  8. 2026-08-15 01:29 UTCGHSA enrichment
  9. 2026-08-15 01:29 UTCEPSS rescore
  10. 2026-08-14 21:29 UTCGHSA enrichment
  11. 2026-08-14 13:08 UTCGHSA enrichment
  12. 2026-08-14 09:08 UTCEG score recompute
  13. 2026-08-14 09:08 UTCGHSA enrichment
  14. 2026-08-13 21:59 UTCEPSS rescore
  15. 2026-08-13 01:09 UTCEG score recompute
  16. 2026-08-13 01:09 UTCGHSA enrichment
  17. 2026-08-12 13:50 UTCEPSS rescore
  18. 2026-08-12 00:57 UTCEG score recompute
  19. 2026-08-12 00:57 UTCGHSA enrichment
  20. 2026-08-11 06:39 UTCEG score recompute
  21. 2026-08-11 06:39 UTCGHSA enrichment
  22. 2026-08-10 13:18 UTCGHSA enrichment
  23. 2026-08-10 08:56 UTCGHSA enrichment
  24. 2026-08-10 02:15 UTCGHSA enrichment
  25. 2026-08-09 21:53 UTCGHSA enrichment
  26. 2026-08-09 17:53 UTCGHSA enrichment
  27. 2026-08-09 13:53 UTCEG score recompute
  28. 2026-08-09 13:53 UTCGHSA enrichment
  29. 2026-08-09 13:46 UTCEPSS rescore
  30. 2026-08-09 08:46 UTCEG score recompute
  31. 2026-08-09 08:46 UTCGHSA enrichment
  32. 2026-08-08 16:36 UTCEPSS rescore
  33. 2026-08-08 08:54 UTCGHSA enrichment
  34. 2026-08-08 04:54 UTCGHSA enrichment
  35. 2026-08-08 00:53 UTCGHSA enrichment
  36. 2026-08-07 20:53 UTCEG score recompute
  37. 2026-08-07 20:53 UTCGHSA enrichment
  38. 2026-08-07 16:26 UTCEPSS rescore
  39. 2026-08-06 13:46 UTCEPSS rescore
  40. 2026-08-06 07:09 UTCGHSA enrichment
  41. 2026-08-06 03:09 UTCEG score recompute
  42. 2026-08-06 03:09 UTCGHSA enrichment
  43. 2026-08-04 15:09 UTCEPSS rescore
  44. 2026-08-04 10:37 UTCEPSS rescore
  45. 2026-08-04 05:59 UTCEG score recompute
  46. 2026-08-04 05:59 UTCGHSA enrichment
  47. 2026-08-03 10:35 UTCEPSS rescore
  48. 2026-08-02 23:43 UTCGHSA enrichment
  49. 2026-08-02 19:43 UTCEG score recompute
  50. 2026-08-02 19:43 UTCGHSA enrichment
  51. 2026-08-02 02:26 UTCEPSS rescore
  52. 2026-08-01 04:15 UTCEPSS rescore
  53. 2026-07-30 16:27 UTCEPSS rescore
  54. 2026-07-30 01:29 UTCEPSS rescore
  55. 2026-07-28 15:35 UTCEPSS rescore
  56. 2026-07-27 13:34 UTCEG score recompute
  57. 2026-07-27 13:34 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2025-40540?
CVE-2025-40540 is a critical vulnerability published on February 24, 2026. A type confusion vulnerability exists in Serv-U which when exploited, gives a malicious actor the ability to execute arbitrary native code as privileged account. This issue requires administrative privileges to abuse. On Windows deployments, the risk is scored as a medium because services…
When was CVE-2025-40540 disclosed?
CVE-2025-40540 was first published in the National Vulnerability Database on February 24, 2026, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-40540 actively exploited?
CVE-2025-40540 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 61.9% of all scored CVEs.
What is the CVSS score of CVE-2025-40540?
CVE-2025-40540 has a CVSS v3 base score of 7.2 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.1.
How do I remediate CVE-2025-40540?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-40540, 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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