Critical severity9.8NVD Advisory· Published Jul 3, 2023· Updated Jun 17, 2026

CVE-2023-26258

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Arcserve/UDP2 versions
cpe:2.3:a:arcserve:udp:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:arcserve:udp:*:*:*:*:*:*:*:*range: <=9.0.6034
- (no CPE)range: <=9.0.6034
Arcserve/Arcserve UDPdescription

Patches

Vulnerability mechanics

References

www.mdsec.co.uk/2023/06/cve-2023-26258-remote-code-execution-in-arcserve-udp-backup/nvdExploitTechnical DescriptionThird Party Advisory
www.arcserve.com/products/arcserve-udpnvdProduct
support.arcserve.com/s/article/KB000015720nvd

News mentions

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cvss	0.637
epss	0.030
exploit	0.000
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ransomware	0.000