CVE intelligence and bounded remediation

CVE-2023-22303 — TP-Link SG105PE firmware prior to 'TL-SG105PE(UN) 1.0_1.0.0 Build 20221208' contains an authentication bypass vulnerability

Critical CVSS 9.8

TP-Link SG105PE firmware prior to 'TL-SG105PE(UN) 1.0_1.0.0 Build 20221208' contains an authentication bypass vulnerability. Under the certain conditions, an attacker may impersonate an administrator of the product. As a result, information may be obtained and/or the product's settings may be altered with the privilege of the administrator.

Severity
Critical
CVSS
9.8 (3.1)
Published
2023-01-17
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-287

Affected products

  • tp-link / tl-sg105pe_firmware / 1.0.0

Matched remediation archetype

Authentication bypass and missing authentication

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Check exposure

  • Map every affected endpoint and protocol path, including alternate ports, legacy routes, recovery flows, service accounts, and machine-to-machine access.
  • Confirm which deployments enable the affected authentication mode and whether the interface is reachable from untrusted networks.
  • Review session, token, credential, and proxy trust configuration without attempting account takeover.

Remediate safely

  • Apply the supported fix and centralize fail-closed authentication before protected request handling.
  • Remove default or embedded credentials, rotate affected secrets and sessions, and bind authentication decisions to the intended audience and channel.
  • Add negative tests for alternate routes, malformed or absent credentials, recovery flows, and proxy-derived identity.

Authoritative sources

Complete CVE record and remediation plan

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