H3C G3/G5 HDM Firmware Verification Key Replacement

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-65197
StatePUBLISHED
AssignerrunZero
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-13 15:17:46 UTC
Updated2026-10-16 19:56:15 UTC
DescriptionH3C HDM Family-A verifies the RSA signature of a firmware image against a public key it reads from the mutable file `/conf/public.pem`. That file is writable by an authenticated Redfish client through the `UpdateService.UploadSignKey` action, which stores the uploaded body verbatim after validating only that the multipart filename ends in `.pem`. An administrator, or any account with `firmware-update` privilege, can therefore replace the trust anchor with their own key, sign a malicious image with the matching private key, and have it pass verification. Family-A has no hardware root-of-trust (no PFR) to catch the substituted key.  This was observed on H3C HDM Family-A G5 HDM 6.14.01. H3C HDM Family-A G3/G5 builds carrying the Redfish/DRE update tree appear to be affected. HDM2 uses a different update path and is not covered by this finding.

Risk And Classification

Primary CVSS: v3.1 3.1 LOW from 44488dab-36db-4358-99f9-bc116477f914

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

EPSS: 0.000980000 probability, percentile 0.007410000 (date 2026-10-16)

Problem Types: CWE-347 | CWE-347 CWE-347 Improper verification of cryptographic signature

VersionSourceTypeScoreSeverityVector
3.144488dab-36db-4358-99f9-bc116477f914Secondary3.1LOWCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:N
3.1CNACVSS3.1LOWCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:N

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA H3C HDM Family-A G5 affected 6.14.01 semver Not specified

References

ReferenceSourceLinkTags
www.runzero.com/advisories/h3c-hdm-firmware-verification-key-replacement-cve-... 44488dab-36db-4358-99f9-bc116477f914 www.runzero.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: HD Moore of runZero (en)

CNA: Tod Beardsley of runZero (en)

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