What’s Vulnerable › Vulnerabilities

CVE-2023-28503: Authentication bypass in UniRPC's udadmin service

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 62.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-03-29 · updated 2026-06-17
• Weakness: CWE-798

Description

Rocket Software UniData versions prior to 8.2.4 build 3003 and UniVerse versions prior to 11.3.5 build 1001 or 12.2.1 build 2002 suffer from an authentication bypass vulnerability, where a special username with a deterministic password can be leveraged to bypass authentication checks and execute OS commands as the root user.

Affected products

• Rocket Software UniData: through 8.2.4
• Rocket Software UniVerse: through 11.3.5; from 12.0.0 through 12.2.1

References

• http://packetstormsecurity.com/files/171854/Rocket-Software-Unidata-udadmin_server-Authentication-Bypass.html
• https://www.rapid7.com/blog/post/2023/03/29/multiple-vulnerabilities-in-rocket-software-unirpc-server-fixed/
• http://packetstormsecurity.com/files/171854/Rocket-Software-Unidata-udadmin_server-Authentication-Bypass.html
• https://www.rapid7.com/blog/post/2023/03/29/multiple-vulnerabilities-in-rocket-software-unirpc-server-fixed/

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