What’s Vulnerable › Vulnerabilities

CVE-2021-33895

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-06-25 · updated 2026-06-17
• Weakness: CWE-287

Description

ETINET BACKBOX E4.09 and H4.09 mismanages password access control. When a user uses the User ID of the process running BBSV to login to the Backbox UI application, the system procedure (USER_AUTHENTICATE_) used for verifying the Password returns 0 (no error). The reason is that the user is not running the XYGate application. Hence, BBSV assumes the Password is correct. For H4.09, the affected version isT0954V04^AAO. For E4.09, the affected version is 22SEP2020. Note: If your current version is E4.10-16MAY2021 (version procedure T9999V04_16MAY2022_BPAKETI_10), a hotfix (FIXPAK-19OCT-2022) is available in version E4.10-19OCT2022. Resolution to CVE-2021-33895 in version E4.11-19OCT2022

Affected products

• Etinet Backbox E4.09 Firmware: 2020-09-22
• HPE Backbox H4.09 Firmware: t0954v04^aao

References

• https://etinet.com/products/backbox-virtual-tape-controller/
• https://support.hpe.com/hpesc/public/docDisplay?docLocale=en_US&docId=hpesbns04172en_us
• https://etinet.com/products/backbox-virtual-tape-controller/
• https://support.hpe.com/hpesc/public/docDisplay?docLocale=en_US&docId=hpesbns04172en_us

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