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PatchSiren cyber security CVE debrief

CVE-2021-45475 Yordam CVE debrief

CVE-2021-45475 is a medium-severity information disclosure vulnerability affecting Yordam Library Automation System versions prior to 19.02. The vulnerability allows unauthenticated attackers to access sensitive information without requiring authentication credentials. The issue was publicly disclosed on October 27, 2022, with the most recent modification to the CVE record occurring on May 18, 2026. The vulnerability is classified under CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor) and carries a CVSS 3.1 score of 5.3 (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N), indicating network-accessible, low-complexity attacks that require no privileges or user interaction, with limited confidentiality impact. The affected product is Yordam's Library Information Document Automation system, a library management solution. The vulnerability was reported through Turkish cybersecurity authorities, with advisories published by both the National Cyber Security Incident Response Center (USOM) and the Cyber Security Directorate. Organizations running affected versions should upgrade to version 19.02 or later to remediate this vulnerability.

Vendor
Yordam
Product
Library Automation System
CVSS
MEDIUM 5.3
CISA KEV
Not listed in stored evidence
Original CVE published
2022-10-27
Original CVE updated
2026-05-18
Advisory published
2022-10-27
Advisory updated
2026-05-18

Who should care

Organizations operating Yordam Library Automation System deployments, particularly academic and public library systems in Turkey and regions where this software is deployed. Security teams responsible for library management infrastructure.

Technical summary

Unauthenticated information disclosure vulnerability in Yordam Library Automation System versions < 19.02. Network-accessible without authentication. Fixed in 19.02.

Defensive priority

medium

Recommended defensive actions

  • Upgrade Yordam Library Automation System to version 19.02 or later
  • Review access logs for unauthorized information access attempts prior to patching
  • Verify that library system deployments are not exposed to untrusted networks unnecessarily
  • Subscribe to vendor security notifications for future updates

Evidence notes

Vulnerability confirmed through official Turkish government cybersecurity advisories (USOM and Cyber Security Directorate). CPE criteria confirms affected versions are all releases prior to 19.02. CVSS vector and scoring derived from NVD analysis.

Sources and references

Verified primary and authoritative sources

  • CVE-2021-45475 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2021-45475

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2021-45475 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2021-45475

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.