CVE intelligence and bounded remediation

CVE-2017-20021 — A vulnerability, which was classified as critical, was found in Solare Solar-Log 2.8.4-56/3.5.2-85

Critical CVSS 9.8

A vulnerability, which was classified as critical, was found in Solare Solar-Log 2.8.4-56/3.5.2-85. This affects an unknown part of the component File Upload. The manipulation leads to privilege escalation. It is possible to initiate the attack remotely. Upgrading to version 3.5.3-86 is able to address this issue. It is recommended to upgrade the affected component.

Severity
Critical
CVSS
9.8 (3.1)
Published
2022-06-09
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-269, CWE-434

Affected products

  • solar-log / solar-log_250_firmware / 2.8.4-56
  • solar-log / solar-log_250_firmware / 3.5.2-85
  • solar-log / solar-log_300_firmware / 2.8.4-56
  • solar-log / solar-log_300_firmware / 3.5.2-85
  • solar-log / solar-log_500_firmware / 2.8.4-56
  • solar-log / solar-log_500_firmware / 3.5.2-85

Showing 6 representative product identities from 16 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

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

The detailed catalog view below loads this exact record, its source evidence, and the full seven-phase agentic change plan.