CVE intelligence and bounded remediation

CVE-2021-39297 — Hp 260 G3 Desktop Mini Pc Firmware security vulnerability

High CVSS 8.8

Potential vulnerabilities have been identified in UEFI firmware (BIOS) for some PC products which may allow escalation of privilege and arbitrary code execution.

Severity
High
CVSS
8.8 (3.1)
Published
2022-02-16
CISA KEV
Not currently listed
Ecosystem
operating-system

Affected products

  • hp / 260_g3_desktop_mini_pc_firmware
  • hp / elitedesk_800_35w_g4_desktop_mini_pc_firmware
  • hp / elitedesk_800_65w_g4_desktop_mini_pc_firmware
  • hp / elitedesk_800_95w_g4_desktop_mini_pc_firmware
  • hp / elitedesk_800_g4_small_form_factor_pc_firmware
  • hp / elitedesk_800_g4_tower_pc_firmware

Showing 6 representative product identities from 196 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Command, code, expression, and template injection

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Check exposure

  • Trace untrusted values to process execution, interpreters, evaluators, template engines, dynamic imports, and administrative scripting features.
  • Determine whether the affected path is reachable across each trust boundary and which service account or host privilege it inherits.
  • Review configuration for optional execution features, unsafe compatibility modes, and shell invocation.

Remediate safely

  • Replace string-built commands or evaluated code with fixed operations and structured argument APIs that do not invoke a shell.
  • Use strict allowlists for operation identifiers and reject unexpected input before it reaches any interpreter.
  • Update the affected component and add inert regression tests covering metacharacters, encoding variants, and alternate request paths.

Authoritative sources

Complete CVE record and remediation plan

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