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2 vulnerabilities found for KnowledgeDeliver by Digital Knowledge
CVE-2026-5426 (GCVE-0-2026-5426)
Vulnerability from nvd – Published: 2026-04-16 15:18 – Updated: 2026-05-27 14:53
VLAI
KEVIntel
Title
KnowledgeDeliver deployments before February 24, 2026 use a static ASP.NET/IIS machineKey value
Summary
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
Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/mandiant/Vulnerability-Disclos… | third-party-advisory |
| https://www.digital-knowledge.co.jp/product/kd/ | product |
| https://cloud.google.com/blog/topics/threat-intel… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Digital Knowledge | KnowledgeDeliver |
Affected:
0 , < 20260224
(date)
|
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 9.1,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2026-5426",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-26T17:08:59.810913Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-05-27T14:53:16.313Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "KnowledgeDeliver",
"vendor": "Digital Knowledge",
"versions": [
{
"lessThan": "20260224",
"status": "affected",
"version": "0",
"versionType": "date"
}
]
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "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"
}
],
"value": "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"
}
],
"impacts": [
{
"capecId": "CAPEC-586",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-586 Object Injection"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-321",
"description": "CWE-321 Use of hard-coded cryptographic key",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-502",
"description": "CWE-502 Deserialization of untrusted data",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-26T18:48:16.722Z",
"orgId": "027e81ed-0dd4-4685-ab4d-884aec5bb484",
"shortName": "Mandiant"
},
"references": [
{
"tags": [
"third-party-advisory"
],
"url": "https://github.com/mandiant/Vulnerability-Disclosures/blob/master/2026/MNDT-2026-0009.md"
},
{
"tags": [
"product"
],
"url": "https://www.digital-knowledge.co.jp/product/kd/"
},
{
"tags": [
"third-party-advisory"
],
"url": "https://cloud.google.com/blog/topics/threat-intelligence/knowledgedeliver-viewstate-deserialization-vulnerability"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "KnowledgeDeliver deployments before February 24, 2026 use a static ASP.NET/IIS machineKey value",
"x_generator": {
"engine": "Vulnogram 1.0.1"
}
}
},
"cveMetadata": {
"assignerOrgId": "027e81ed-0dd4-4685-ab4d-884aec5bb484",
"assignerShortName": "Mandiant",
"cveId": "CVE-2026-5426",
"datePublished": "2026-04-16T15:18:46.224Z",
"dateReserved": "2026-04-02T14:20:13.588Z",
"dateUpdated": "2026-05-27T14:53:16.313Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-5426 (GCVE-0-2026-5426)
Vulnerability from cvelistv5 – Published: 2026-04-16 15:18 – Updated: 2026-05-27 14:53
VLAI
KEVIntel
Title
KnowledgeDeliver deployments before February 24, 2026 use a static ASP.NET/IIS machineKey value
Summary
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
Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/mandiant/Vulnerability-Disclos… | third-party-advisory |
| https://www.digital-knowledge.co.jp/product/kd/ | product |
| https://cloud.google.com/blog/topics/threat-intel… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Digital Knowledge | KnowledgeDeliver |
Affected:
0 , < 20260224
(date)
|
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 9.1,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2026-5426",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-26T17:08:59.810913Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-05-27T14:53:16.313Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "KnowledgeDeliver",
"vendor": "Digital Knowledge",
"versions": [
{
"lessThan": "20260224",
"status": "affected",
"version": "0",
"versionType": "date"
}
]
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "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"
}
],
"value": "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"
}
],
"impacts": [
{
"capecId": "CAPEC-586",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-586 Object Injection"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-321",
"description": "CWE-321 Use of hard-coded cryptographic key",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-502",
"description": "CWE-502 Deserialization of untrusted data",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-26T18:48:16.722Z",
"orgId": "027e81ed-0dd4-4685-ab4d-884aec5bb484",
"shortName": "Mandiant"
},
"references": [
{
"tags": [
"third-party-advisory"
],
"url": "https://github.com/mandiant/Vulnerability-Disclosures/blob/master/2026/MNDT-2026-0009.md"
},
{
"tags": [
"product"
],
"url": "https://www.digital-knowledge.co.jp/product/kd/"
},
{
"tags": [
"third-party-advisory"
],
"url": "https://cloud.google.com/blog/topics/threat-intelligence/knowledgedeliver-viewstate-deserialization-vulnerability"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "KnowledgeDeliver deployments before February 24, 2026 use a static ASP.NET/IIS machineKey value",
"x_generator": {
"engine": "Vulnogram 1.0.1"
}
}
},
"cveMetadata": {
"assignerOrgId": "027e81ed-0dd4-4685-ab4d-884aec5bb484",
"assignerShortName": "Mandiant",
"cveId": "CVE-2026-5426",
"datePublished": "2026-04-16T15:18:46.224Z",
"dateReserved": "2026-04-02T14:20:13.588Z",
"dateUpdated": "2026-05-27T14:53:16.313Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}