PT-2025-26527 · Yealink · Yealink Ymcs Rps

Jeroen Hermans + 1 · Published 2025-06-10 · Updated 2025-06-22 · CVE-2025-52916

Positive Technologies (AI Summary)

CVSS v3.1

2.2

Low

Base vector

AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:N

Name of the Vulnerable Software and Affected Versions: Yealink YMCS RPS versions prior to 2025-06-04

Description: The issue is related to the lack of SN verification attempt limits, which enables brute-force enumeration of the last five digits.

Recommendations: For versions prior to 2025-06-04, update to a version released after 2025-06-04 to include SN verification attempt limits and prevent brute-force enumeration.

Fix

Improper Restriction of Excessive Authentication Attempts

Weakness Enumeration

CWE-307

Related Identifiers

BDU:2025-09784

CVE-2025-52916

Affected Products

Yealink Ymcs Rps

References · 9

• https://bdu.fstec.ru/vul/2025-09784 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-52916 · Security Note
• https://support.yealink.com/en/portal/knowledge/show?id=6476e7cd6a27da76bd06a9c9 · Note
• https://yealink.com/en/trust-center/security-advisories/b8dc062eaa8d4f59 · Note
• https://vuldb.com/?id.313602 · Note
• https://t.me/cvetracker/26765 · Telegram Post
• https://seclists.org/fulldisclosure/2025/Jun/20 · Note
• https://dnip.ch/2025/06/25/yealink-voip-phones-insecurity-by-design · Note
• https://twitter.com/CVEnew/status/1936567689448943904 · Twitter Post