CVE-2026-5426 | BDVDB-2026-327376 Detail

Digital KnowledgeKnowledgeDeliver

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

Impact#

CAPEC-586 Object Injection

Weaknesses#

CWE-321 Use of hard-coded cryptographic key
CWE-502 Deserialization of Untrusted Data

References#

Exploit#

No public exploit known

History#

Version 12026-04-16Record published in the CVE List.
Version 22026-05-27Most recent update recorded in the CVE List.

Published

Published: 2026-04-16
Last modified: 2026-05-27

Vendor information

Vendor: Digital Knowledge
Product: KnowledgeDeliver

All Digital Knowledge vulnerabilities

Score

9.1 Critical

EPSS

1.0%, Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 63.3.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Insecure Deserialization

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
< 20260224
Fixed
20260224

Scoring System

CVSS v4.0

Not available

CVSS v3.1

9.1 Critical

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

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	None
User Interaction	None
Scope	Unchanged
Confidentiality	High
Integrity	High
Availability	None

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).