CVE-2023-4934

CVE-2023-4934 is a high vulnerability published on September 27, 2023. Authorization Bypass Through User-Controlled Key vulnerability in Usta AYBS allows Authentication Abuse, Authentication Bypass. This issue affects AYBS: before 1.0.3.

CVE-2023-4934 was first published in the National Vulnerability Database on September 27, 2023, with the most recent update on May 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

CVE-2023-4934 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 22.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

CVE-2023-4934 has a CVSS v3 base score of 8.8 (NVD).

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-4934, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.