PatchTheCVECVE-2018-6329: It was discovered that the Unitrends Backup (UB) before 10.1.0 libbpext.so authentication could be bypassed wi
CVE-2018-6329 is a critical-severity flaw (CVSS 9.8) affecting backup. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
It was discovered that the Unitrends Backup (UB) before 10.1.0 libbpext.so authentication could be bypassed with a SQL injection, allowing a remote attacker to place a privilege escalation exploit on the target system and subsequently execute arbitrary commands.
Why this priority
- Critical severity
- EPSS top 1%: very likely to be exploited
- Public exploit reference
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 61.2% (top 1%) |
| CISA exploited list | No |
| Weakness | CWE-89 |
| Published | 2018-03-14 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Public exploits and detection
Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.
- Exploit-DB: Unitrends Enterprise Backup - bpserverd Privilege Escalation (Metasploit)
- Exploit-DB: Unitrends UEB 10.0 - Root Remote Code Execution
- Metasploit: Unitrends Enterprise Backup bpserverd Privilege Escalation
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2018-6329?
backup: upgrade to 10.1.10. Exact commands for each OS are on this page.
Is CVE-2018-6329 being exploited?
CVE-2018-6329 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2018-6329 affect?
CVE-2018-6329 affects backup. Severity is critical (CVSS 9.8). It was discovered that the Unitrends Backup (UB) before 10.1.0 libbpext.so authentication could be bypassed with a SQL injection, allowing a remote attacker to place a privilege escalation exploit on the target system and subsequently execu
How urgent is CVE-2018-6329?
Priority 69/100. Critical severity; EPSS top 1%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action
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