TI-2021-20901 Aliases CVE-2021-45891 GHSA-rw7c-r2hj-99vq

An issue was discovered in Softwarebuero Zauner ARC 4.2.0.4., that allows attackers to…

MEDIUM 41CWE-669Published 2022-04-05 · Updated 2024-08-04

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

An issue was discovered in Softwarebuero Zauner ARC 4.2.0.4., that allows attackers to escalate privileges within the application, since all permission checks are done client-side, not server-side.

Why it matters now

EPSS 0.01419 72nd percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:zauner:arc:4.2.0.4:::::::*	4.2.0.4	Vulnerable	Zauner

cpe:2.3:a:zauner:arc:4.2.0.4:*:*:*:*:*:*:* Versions 4.2.0.4 Vulnerable ·Zauner

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2021-45891
2026-10-03 Alias added: GHSA-rw7c-r2hj-99vq

References

Exploit 1

https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2021-063.txt

Advisory 1

https://syss.de

TI-2021-20903 An issue was discovered in Softwarebuero Zauner ARC 4.2.0.4. CVSS 3.1HIGH 7.5
TI-2021-20904 An issue was discovered in Softwarebuero Zauner ARC 4.2.0.4. CVSS 3.1MEDIUM 5.9
TI-2021-20902 An issue was discovered in Softwarebuero Zauner ARC 4.2.0.4. CVSS 3.1MEDIUM 5.9

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences