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CVE Record
[ CRITICAL ]CVE-2024-28986

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).

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.

CVE / VulnerabilitySeverityCVSSEPSSAdded to KEV
CVE-2025-26399
SolarWinds Web Help Desk Deserialization of Untrusted Data Vulnerabilityransomware use
[ CRITICAL ]9.890.1%
CVE-2025-40536
SolarWinds Web Help Desk Security Control Bypass Vulnerability
[ HIGH ]8.173.6%
CVE-2025-40551
SolarWinds Web Help Desk Deserialization of Untrusted Data Vulnerability
[ CRITICAL ]9.884.2%
CVE-2024-28987
SolarWinds Web Help Desk Hardcoded Credential Vulnerability
[ CRITICAL ]9.193.3%
All 5 SolarWinds Web Help Desk known exploited vulnerabilities →