CVE-2023-26258

CriticalCVSS 9.8/10Last modified Jun 17, 2026

Description

Arcserve UDP through 9.0.6034 allows authentication bypass. The method getVersionInfo at WebServiceImpl/services/FlashServiceImpl leaks the AuthUUID token. This token can be used at /WebServiceImpl/services/VirtualStandbyServiceImpl to obtain a valid session. This session can be used to execute any task as administrator.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-863

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

https://support.arcserve.com/s/article/KB000015720?language=en_US
https://www.arcserve.com/products/arcserve-udpProduct
https://www.mdsec.co.uk/2023/06/cve-2023-26258-remote-code-execution-in-arcserve-udp-backup/Exploit, Technical Description, Third Party Advisory
https://support.arcserve.com/s/article/KB000015720?language=en_US
https://www.arcserve.com/products/arcserve-udpProduct
https://www.mdsec.co.uk/2023/06/cve-2023-26258-remote-code-execution-in-arcserve-udp-backup/Exploit, Technical Description, Third Party Advisory

Timeline

Published: Jul 3, 2023
Last modified: Jun 17, 2026
NVD status: Modified

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