CVE intelligence and bounded remediation

CVE-2021-22396 — There is a privilege escalation vulnerability in some Huawei products

High CVSS 7.8

There is a privilege escalation vulnerability in some Huawei products. Due to improper privilege management, a local attacker with common privilege may access some specific files in the affected products. Successful exploit will cause privilege escalation.Affected product versions include:eCNS280_TD V100R005C00,V100R005C10;eSE620X vESS V100R001C10SPC200,V100R001C20SPC200.

Severity
High
CVSS
7.8 (3.1)
Published
2021-08-02
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-269

Affected products

  • huawei / ecns280_td_firmware / v100r005c00
  • huawei / ecns280_td_firmware / v100r005c10
  • huawei / ese620x_vess_firmware / v100r001c10spc200
  • huawei / ese620x_vess_firmware / v100r001c20spc200

Matched remediation archetype

Privilege escalation and unsafe privilege management

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Map service accounts, operating-system identities, roles, capabilities, impersonation, set-user transitions, and administrative helper paths.
  • Determine whether untrusted users or lower-privilege processes can reach the affected transition or modify inputs it trusts.
  • Review file, socket, registry, device, job, container, and cloud-role permissions used before and after privilege changes.

Remediate safely

  • Apply the supported fix and redesign privileged operations as a minimal, authenticated, allowlisted interface.
  • Drop privileges before processing untrusted input, verify the drop succeeds, and remove unnecessary roles, capabilities, and write permissions.
  • Validate ownership and permissions at time of use and add explicit lower-to-higher privilege boundary tests.

Authoritative sources

Complete CVE record and remediation plan

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