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Fencer Vulns
low 2.2

CVE-2025-52916 json

Yealink RPS before 2025-06-04 lacks SN verification attempt limits, enabling brute-force enumeration (last five digits).

published 2025-06-21 16 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-19547

cvss
2.2
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 22%
public exploits
0
none known

Summary

Yealink RPS before 2025-06-04 lacks SN verification attempt limits, enabling brute-force enumeration (last five digits).

Patch / fix

  • Yealink RPS 2025-06-04

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-25-219-08 updated cvss 2.2

Yealink IP Phones and RPS (Redirect and Provisioning Service)

  • Yealink CP960 <73.84.0.37
    affected: vendor fix, mitigation “Users of Yealink are encouraged to navigate to Yealink's support portal andupdate to the following versions:” support.yealink.com
  • Yealink RPS (Redirect and Provisioning Service) <builds_05-26-2025
    affected: mitigation “Users of Yealink are encouraged to navigate to Yealink's support portal andupdate to the following versions:” support.yealink.com
  • Yealink SIP- T48S <66.84.0.121 Yealink SIP-CP920 <78.84.0.121 Yealink SIP-T19P_E2 <53.84.0.121 Yealink SIP-T20P Yealink SIP-T21P_E2 <52.84.0.121 Yealink SIP-T22P
    +24 more products
    Yealink SIP-T23G <44.84.0.121 Yealink SIP-T26P Yealink SIP-T27G <69.84.0.121 Yealink SIP-T27P <=45.83.0.160 Yealink SIP-T29G <=46.83.0.160 Yealink SIP-T40G <76.84.0.121 Yealink SIP-T40P <54.84.0.121 Yealink SIP-T41P <=36.83.0.160 Yealink SIP-T41S <66.84.0.121 Yealink SIP-T42G <=29.83.0.160 Yealink SIP-T42S <66.84.0.121 Yealink SIP-T46G <=28.83.0.160 Yealink SIP-T46S <66.84.0.121 Yealink SIP-T48G <=35.83.0.160 Yealink SIP-T53 <X.84.0.121 Yealink SIP-T53W <X.84.0.121 Yealink SIP-T54W <X.84.0.121 Yealink SIP-T56A <58.84.0.37 Yealink SIP-T57W <X.84.0.121 Yealink SIP-T58 <58.84.0.37 Yealink T52S Yealink T54S Yealink W52P <25.81.0.67 Yealink W60B <77.83.0.83
    affected: vendor fix, mitigation “Users of Yealink are encouraged to navigate to Yealink's support portal andupdate to the following versions:” support.yealink.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
16 mo ago

Exploit prediction

0.30% chance of exploitation in the next 30 days, higher than 22% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 2.2 CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:N

Affected products

  • Yealink RPS

Classification

Weakness
  • CWE-307 Improper Restriction of Excessive Authentication Attempts

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.