Public proof of conceptFix available

CVE-2017-12477

Q: Is CVE-2017-12477 actively exploited?

Active exploitation of CVE-2017-12477 has not been confirmed. Its EPSS score was 68.2% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2017-12477?

CVE-2017-12477 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

A public proof of concept exists; no exploitation attested.

Published2017-08-07
Fixed in10.0
WeaknessCWE-287

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC

2017-08-0715:29CVE publishedNVD
2026-10-2319:23EPSS crossed 10 %FIRST EPSS

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2017-12477?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2017-12477?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Kaseya unitrends backup

Branch	Affected	Fixed in	Source
10.0	< 10.0	10.0	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Kaseya unitrends backup to 10.0

Advisories and patches

support.unitrends.comVendor Advisory

Detection

read 2026-10-23 19:23 UTC

Nuclei template: none so far
Exploit-DB: EDB-42957 EDB-43031
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.19.8read 2026-10-23
NVDCVSS 2.010read 2026-10-23
NVDweakness (CWE)CWE-287read 2026-10-23
FIRST EPSSEPSS score68.2 %read 2026-10-23
Exploit-DBdetectionread 2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2017-08-07
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2017-12477?

Is CVE-2017-12477 actively exploited?

Active exploitation of CVE-2017-12477 has not been confirmed. Its EPSS score was 68.2% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2017-12477?

CVE-2017-12477 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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