Vendor
SolarWinds: actively exploited vulnerabilities
11 vulnerabilities in SolarWinds products are listed in CISA’s catalog of actively exploited vulnerabilities, 2 of them used by ransomware. Latest addition on June 5, 2026: CVE-2026-28318 (Serv-U).
- 11 exploited vulnerabilities in the catalog
- 4 added in the last 12 months
- 2 used by ransomware
- 4 products affected
Affected products
- Web Help Desk5
- Serv-U4
- Orion1
- Virtualization Manager1
All exploited vulnerabilities
CISA KEV catalog, newest first: each entry corresponds to observed exploitation.
2026 4 vulnerabilities
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CVE-2026-28318SolarWinds Serv-U Uncontrolled Resource Consumption Vulnerability
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CVE-2025-26399Used by ransomwareSolarWinds Web Help Desk Deserialization of Untrusted Data Vulnerability
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CVE-2025-40536SolarWinds Web Help Desk Security Control Bypass Vulnerability
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CVE-2025-40551SolarWinds Web Help Desk Deserialization of Untrusted Data Vulnerability
2024 3 vulnerabilities
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CVE-2024-28987SolarWinds Web Help Desk Hardcoded Credential Vulnerability
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CVE-2024-28986SolarWinds Web Help Desk Deserialization of Untrusted Data Vulnerability
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CVE-2024-28995SolarWinds Serv-U Path Traversal Vulnerability
2022 1 vulnerability
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CVE-2021-35247SolarWinds Serv-U Improper Input Validation Vulnerability
2021 3 vulnerabilities
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CVE-2021-35211Used by ransomwareSolarWinds Serv-U Remote Code Execution Vulnerability
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CVE-2020-10148SolarWinds Orion Authentication Bypass Vulnerability
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CVE-2016-3643SolarWinds Virtualization Manager Privilege Escalation Vulnerability
What to do
If your estate includes any of these products, make sure the vendor’s patches are applied, starting with the most recent vulnerabilities and those used by ransomware, then look for signs of compromise: an exploited vulnerability has often been used before it was fixed.
Additions from all vendors are tracked on the Actively exploited vulnerabilities page, updated several times a day. Sources: CISA KEV catalog (US public domain) and CERT-FR.