CVE-2025-40536

CRITICALNVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score elevated to 9.8 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2026-02-12), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 9.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 4 sources updated this weekExploited in the wild
9.8EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 82%CVSS: 9.8Exploit: cisa kev · ssvc active · Metasploit · epss top5pct · epss high · public exploitExposed: 0

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

SolarWinds Web Help Desk was found to be susceptible to a security control bypass vulnerability that if exploited, could allow an unauthenticated attacker to gain access to certain restricted functionality.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
84(Attend)
EG Risk 84/100SSVC: Attend

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
Severity98% × 45%
Exploitation100% × 40%
Automatability0% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
82%
EPSS %ILE
100%
KEV
⚠ Exploited

Published

January 28, 2026

Last Modified

June 17, 2026

Advisory Details (4)

Auto-updated Sep 15, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: cisa.
generic

Active Exploitation of SolarWinds Web Help Desk (CVE-2025-26399) | Huntress

https://www.huntress.com/blog/active-exploitation-solarwinds-web-help-desk-cve-2025-26399
cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-40536
generic

SolarWinds Trust Center Security Advisories | CVE-2025-40536

https://www.solarwinds.com/trust-center/security-advisories/CVE-2025-40536
generic

WHD 2026.1 release notes

https://documentation.solarwinds.com/en/success_center/whd/content/release_notes/whd_2026-1_release_notes.htm

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 51× in last 7d / 229× 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 820 total refreshes for this CVE.

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

Publicly available exploits

(2 references)

Working exploit code is in the public domain (1 Metasploit module). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Metasploitexploit/multi/http/solarwinds_webhelpdesk_rce✓ verified
    First seen Jan 28, 2026

    SolarWinds Web Help Desk unauthenticated RCE

    Open source ↗
  • Nucleihttp/cves/2025/CVE-2025-40536.yaml
    First seen Jan 1, 2025

    SolarWinds Web Help Desk < 12.8.8 Hotfix 1 (HF1) - Security Control Bypass

    Open source ↗

Frequently asked(6)

What is CVE-2025-40536?
CVE-2025-40536 is a critical vulnerability published on January 28, 2026. SolarWinds Web Help Desk was found to be susceptible to a security control bypass vulnerability that if exploited, could allow an unauthenticated attacker to gain access to certain restricted functionality.
When was CVE-2025-40536 disclosed?
CVE-2025-40536 was first published in the National Vulnerability Database on January 28, 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-2025-40536 actively exploited?
Yes. CISA added CVE-2025-40536 to the Known Exploited Vulnerabilities catalog on February 12, 2026, affecting SolarWinds Web Help Desk. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2025-40536?
CVE-2025-40536 has a CVSS v3 base score of 9.8 (NVD).
Which products are affected by CVE-2025-40536?
CVE-2025-40536 affects SolarWinds Web Help Desk. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2025-40536?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-40536, 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

Explore the affected products and dependency analysis for CVE-2025-40536

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