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01 Record

CVE-2025-40539

SolarWinds Serv-U Type Confusion Remote Code Execution Vulnerability

CriticalPUBLISHEDCNA: SolarWinds
CNA base score9.1 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

02 Description

SolarWinds Serv-U Type Confusion Remote Code Execution Vulnerability

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.48% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 41.1% of scored records. A rank, not a probability.
NVD base score
7.2 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD analysis status
Analyzed. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-02-24 07:40Z8 MO AGO
Last updated
2026-02-26 14:44Z8 MO AGO
Reserved
2025-04-16
Assigning CNA
SolarWinds
Record state
PUBLISHED
Severity
Critical (CVSS 9.1)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Weaknesses
  • CWE-704Incorrect Type Conversion or CastClass
Data version
5.2
Document digest
a2bf2afd99e23b94c0847a2a79d2a0e8e9d4a08dacce1fcee7bc9e7988a8e7ad

05 Affected products

VendorProductVersionsPlatforms
SolarWindsServ-USolarWinds Serv-U 15.5.3 and prior versionsWindows, Linux

06 References

07 Remediation

SolarWinds recommends that customers upgrade to SolarWinds Serv-U 15.5.4 as soon as it becomes available.