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CVE-2026-65197— H3C G3/G5 HDM Firmware Verification Key Replacement

Quick assessment

Affected
H3C HDM Family-A G5
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

H3C HDM Family-A 在验证固件镜像时，会使用从可变文件 中读取的公钥来校验 RSA 签名。该文件可由经过身份验证的 Redfish 客户端通过 操作进行写入，系统仅验证多部分文件名是否以 结尾，随后便将上传的内容原样存储。因此，具备管理员权限或拥有 特权的任何账户均可用其自身密钥替换信任锚点，并使用对应的私钥对恶意固件镜像进行签名，从而绕过安全验证。由于 Family-A 不具备硬件信任根（如 PFR，Platform Firmware Resiliency），无法检测此类密钥替换行为。 该问题在 H

CVSS 3.1 · Low

Affected Version Matrix 1

VendorProduct Version RangeStatus
H3C HDM Family-A G5 ≤ 6.14.01 affected
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I. Basic Information for CVE-2026-65197

Vulnerability Information
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Vulnerability Title
H3C G3/G5 HDM Firmware Verification Key Replacement
Source: CVE Program / CVE List V5
Vulnerability Description
H3C 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
密码学签名的验证不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
H3C HDM Family-A G5 0 ~ 6.14.01 -

II. Public POCs for CVE-2026-65197

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III. Intelligence Information for CVE-2026-65197

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Vendor Advisories for CVE-2026-65197 (1)

IV. Related Vulnerabilities

Same vendor: H3C
Same weakness: CWE-347

V. Comments for CVE-2026-65197

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