VVX products using UCS software version 5.9.2 and earlier with Better Together over Ethernet Connector (BToE) application version 3.9.1 and…

published 2019-06-24 7y ago modified 2026-06-17 4mo ago also EUVD-2019-2483

cvss: 6.5; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.7%; EPSS 0.7% chance of exploitation in 30 days, percentile 54%
public exploits: 0; none known

VVX products using UCS software version 5.9.2 and earlier with Better Together over Ethernet Connector (BToE) application version 3.9.1 and earlier provides insufficient authentication between the BToE application and the BToE component, resulting in leakage of sensitive information.

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Exploit prediction

0.72% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.0	6.5	CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD	2.0	3.3	AV:A/AC:L/Au:N/C:P/I:N/A:N

Classification

Weakness

CWE-287 Improper Authentication

References

support.polycom.com /content/dam/polycom-support/global/documentation/insufficient-authentication-leakage-vvx-products.pdf
vendor-advisory
securityfocus.com /bid/108799
vdb-entry, third-party-advisory

Sources

CVE List CVE-2019-10689
NVD CVE-2019-10689

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