SolarWinds Web Help Desk Deserialization of Untrusted Data Vulnerability
SolarWinds Web Help Desk contains a deserialization of untrusted data vulnerability that could allow for remote code execution.
- Vendor
- SolarWinds
- Product
- Web Help Desk
- CVSS
- 9.8
- EPSS (exploit probability)
- 84.6%
- Status
- kev
- CISA patch-by (BOD 22-01)
- Added to KEV
Is CVE-2024-28986 being exploited?
Yes. CISA added CVE-2024-28986 to its Known Exploited Vulnerabilities catalog on . CISA only lists a CVE when it has reliable evidence of exploitation in the wild.
FIRST's EPSS model puts the probability of exploitation activity in the next 30 days at 84.6% (scored October 14, 2026).
- CISA KEV[ LISTED ]
- ENISA EUVD (exploited)[ — ]
- CIRCL KEV[ — ]
Catalog snapshot 2026-10-21. Full cross-catalog view: /kev-comparison
What to do
CISA required actionApply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
US federal civilian agencies must remediate by (21 days after listing) under BOD 22-01. Everyone else: that deadline is a sensible upper bound, not a target. Vendor guidance and the NVD record are linked under Source above.
Other SolarWinds Web Help Desk CVEs we track
| CVE / Vulnerability | Severity | CVSS | EPSS | Added to KEV |
|---|---|---|---|---|
| CVE-2025-26399 SolarWinds Web Help Desk Deserialization of Untrusted Data Vulnerabilityransomware use | [ CRITICAL ] | 9.8 | 90.1% | |
| CVE-2025-40536 SolarWinds Web Help Desk Security Control Bypass Vulnerability | [ HIGH ] | 8.1 | 73.6% | |
| CVE-2025-40551 SolarWinds Web Help Desk Deserialization of Untrusted Data Vulnerability | [ CRITICAL ] | 9.8 | 84.2% | |
| CVE-2024-28987 SolarWinds Web Help Desk Hardcoded Credential Vulnerability | [ CRITICAL ] | 9.1 | 93.3% |