CVE-2017-12477

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-13. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Weaponized
9.8
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 68%
CISA-KEV: Not listedEPSS: 68%CVSS: 9.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

It was discovered that the bpserverd proprietary protocol in Unitrends Backup (UB) before 10.0.0, as invoked through xinetd, has an issue in which its authentication can be bypassed. A remote attacker could use this issue to execute arbitrary commands with root privilege on the target system.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
99.2%
KEV
Not listed

Published

August 7, 2017

Last Modified

May 13, 2026

Advisory Details (1)

Auto-updated Jun 21, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

Unitrends UEB 9 - bpserverd Authentication Bypass Remote Command Execution (Metasploit) - Linux_x86 remote Exploit

https://www.exploit-db.com/exploits/43031/

Data Freshness Timeline

(refreshed 7× in last 7d / 23× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-06 16:24 UTCEPSS rescore
  2. 2026-07-06 02:20 UTCEPSS rescore
  3. 2026-07-05 02:27 UTCEPSS rescore
  4. 2026-07-01 15:02 UTCEPSS rescore
  5. 2026-07-01 15:02 UTCEPSS rescore
  6. 2026-06-30 23:19 UTCEPSS rescore
  7. 2026-06-30 23:19 UTCEPSS rescore
  8. 2026-06-28 14:04 UTCEPSS rescore
  9. 2026-06-28 04:53 UTCEPSS rescore
  10. 2026-06-27 03:05 UTCEPSS rescore
  11. 2026-06-25 13:47 UTCEPSS rescore
  12. 2026-06-25 13:47 UTCEPSS rescore
  13. 2026-06-24 14:02 UTCEPSS rescore
  14. 2026-06-23 21:30 UTCEPSS rescore
  15. 2026-06-18 17:50 UTCEPSS rescore
  16. 2026-06-17 17:50 UTCEPSS rescore
  17. 2026-06-16 17:50 UTCEPSS rescore
  18. 2026-06-15 17:45 UTCEPSS rescore
  19. 2026-06-13 22:57 UTCEPSS rescore
  20. 2026-06-12 23:09 UTCEPSS rescore
  21. 2026-06-11 13:57 UTCEPSS rescore
  22. 2026-06-10 22:15 UTCEPSS rescore
  23. 2026-06-08 14:14 UTCEPSS rescore
  24. 2026-06-07 15:22 UTCEPSS rescore
  25. 2026-06-07 15:22 UTCEPSS rescore
Show 43 more
  1. 2026-06-06 13:45 UTCEPSS rescore
  2. 2026-06-06 13:45 UTCEPSS rescore
  3. 2026-06-05 22:44 UTCEPSS rescore
  4. 2026-06-05 06:08 UTCEPSS rescore
  5. 2026-06-05 06:08 UTCEPSS rescore
  6. 2026-06-04 13:10 UTCEPSS rescore
  7. 2026-06-04 13:10 UTCEPSS rescore
  8. 2026-06-01 13:49 UTCEPSS rescore
  9. 2026-06-01 13:49 UTCEPSS rescore
  10. 2026-05-31 00:14 UTCEPSS rescore
  11. 2026-05-29 13:41 UTCEPSS rescore
  12. 2026-05-28 13:42 UTCEPSS rescore
  13. 2026-05-28 13:42 UTCEPSS rescore
  14. 2026-05-27 13:38 UTCEPSS rescore
  15. 2026-05-27 13:38 UTCEPSS rescore
  16. 2026-05-26 07:17 UTCEPSS rescore
  17. 2026-05-26 07:17 UTCEPSS rescore
  18. 2026-05-22 21:15 UTCEPSS rescore
  19. 2026-05-22 21:15 UTCEPSS rescore
  20. 2026-05-22 21:15 UTCEPSS rescore
  21. 2026-05-20 22:37 UTCEPSS rescore
  22. 2026-05-20 22:37 UTCEPSS rescore
  23. 2026-05-20 08:39 UTCEG score recompute
  24. 2026-05-20 08:39 UTCGHSA enrichment
  25. 2026-05-20 04:57 UTCEG score recompute
  26. 2026-05-20 04:57 UTCGHSA enrichment
  27. 2026-05-20 01:15 UTCEG score recompute
  28. 2026-05-20 01:15 UTCGHSA enrichment
  29. 2026-05-19 21:33 UTCEG score recompute
  30. 2026-05-19 21:33 UTCGHSA enrichment
  31. 2026-05-19 17:51 UTCEG score recompute
  32. 2026-05-19 17:51 UTCGHSA enrichment
  33. 2026-05-19 14:09 UTCEG score recompute
  34. 2026-05-19 14:09 UTCGHSA enrichment
  35. 2026-05-19 10:27 UTCEG score recompute
  36. 2026-05-19 10:27 UTCGHSA enrichment
  37. 2026-05-19 06:45 UTCEG score recompute
  38. 2026-05-19 06:45 UTCGHSA enrichment
  39. 2026-05-19 03:03 UTCEG score recompute
  40. 2026-05-19 03:03 UTCGHSA enrichment
  41. 2026-05-18 23:19 UTCEG score recompute
  42. 2026-05-18 21:30 UTCEPSS rescore
  43. 2026-05-18 21:30 UTCEPSS rescore

Publicly available exploits

(3 references)

Working exploit code is in the public domain (1 Metasploit module) (2 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-43031✓ verified
    First seen Oct 23, 2017

    Unitrends UEB 9 - bpserverd Authentication Bypass Remote Command Execution (Metasploit)

    Open source ↗
  • Exploit-DBEDB-42957✓ verified
    First seen Aug 8, 2017

    Unitrends UEB 9.1 - 'Unitrends bpserverd' Remote Command Execution

    Open source ↗
  • Metasploitexploit/linux/misc/ueb9_bpserverd✓ verified
    First seen Aug 8, 2017

    Unitrends UEB bpserverd authentication bypass RCE

    Open source ↗

Frequently asked(5)

What is CVE-2017-12477?
CVE-2017-12477 is a critical vulnerability published on August 7, 2017. It was discovered that the bpserverd proprietary protocol in Unitrends Backup (UB) before 10.0.0, as invoked through xinetd, has an issue in which its authentication can be bypassed. A remote attacker could use this issue to execute arbitrary commands with root privilege on the target system.
When was CVE-2017-12477 disclosed?
CVE-2017-12477 was first published in the National Vulnerability Database on August 7, 2017, with the most recent update on May 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2017-12477 actively exploited?
CVE-2017-12477 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2017-12477?
CVE-2017-12477 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2017-12477?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-12477, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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