CVE intelligence and bounded remediation

CVE-2016-2404 — Huawei S5700 Firmware security vulnerability

High CVSS 7.5

Huawei switches S5700, S6700, S7700, S9700 with software V200R001C00SPC300, V200R002C00SPC100, V200R003C00SPC300, V200R005C00SPC500, V200R006C00; S12700 with software V200R005C00SPC500, V200R006C00; ACU2 with software V200R005C00SPC500, V200R006C00 have a permission control vulnerability. If a switch enables Authentication, Authorization, and Accounting (AAA) for permission control and user permissions are not appropriate, AAA users may obtain the virtual type terminal (VTY) access permission, resulting in privilege escalation.

Severity
High
CVSS
7.5 (3.0)
Published
2017-04-02
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-264

Affected products

  • huawei / s5700_firmware / v200r001c00spc300
  • huawei / s5700_firmware / v200r002c00spc100
  • huawei / s5700_firmware / v200r003c00spc300
  • huawei / s5700_firmware / v200r005c00spc500
  • huawei / s5700_firmware / v200r006c00
  • huawei / s6700_firmware / v200r001c00spc300

Showing 6 representative product identities from 24 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Privilege escalation and unsafe privilege management

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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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