CVE-2026-5426

HIGH

7.5

Description

Hard-coded ASP.NET/IIS machineKey value in Digital Knowledge KnowledgeDeliver deployments prior to February 24, 2026 allows adversaries to circumvent ViewState validation mechanisms and achieve remote code execution via malicious ViewState deserialization attacks

CVE Details

CVSS v3.1 Score7.5

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published4/16/2026

Last Modified4/18/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-321CWE-502

References

https://github.com/mandiant/Vulnerability-Disclosures/blob/master/2026/MNDT-2026-0009.md(mandiant-cve@google.com)

https://www.digital-knowledge.co.jp/product/kd/(mandiant-cve@google.com)

IOC Correlations

No correlations recorded

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