CVE-2021-45893

HIGHNVD 7.57.5—

7.5

An issue was discovered in Softwarebuero Zauner ARC 4.2.0.4. There is Improper Handling of Case Sensitivity, which makes password guessing easier.

CVSS v3: 7.5
EG Score: 7.5(medium)
EPSS: 74.7%
KEV: Not listed

Published

April 5, 2022

Last Modified

November 21, 2024

References (4)

cve@mitrehttps://syss.de
cve@mitrehttps://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2021-065.txt
af854a3a-2127-422b-91ae-364da2661108https://syss.de
af854a3a-2127-422b-91ae-364da2661108https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2021-065.txt

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-178Improper Handling of Case Sensitivity

Data Freshness Timeline

(refreshed 9× in last 7d / 18× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:42 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-23 08:49 UTCEG score recompute
2026-05-23 08:49 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2021-45893?

CVE-2021-45893 is a high vulnerability published on April 5, 2022. An issue was discovered in Softwarebuero Zauner ARC 4.2.0.4. There is Improper Handling of Case Sensitivity, which makes password guessing easier.

When was CVE-2021-45893 disclosed?

CVE-2021-45893 was first published in the National Vulnerability Database on April 5, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-45893 actively exploited?

CVE-2021-45893 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 74.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-45893?

CVE-2021-45893 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2021-45893?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-45893, 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.

Dependency Blast Radius

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CVE-2021-45893

📅 Published

🔄 Last Modified

🔗 References (4)