CVE-2025-14228Public exploitNetwork attack vector

Authenticated browser script execution via unsanitized directory input

Published Dec 8, 2025 · Updated Dec 8, 2025

Cross-site scripting in the Local Directory page of Yealink SIP-T21P E2 52.84.0.15 allows remote authenticated users to execute browser script. The page places a directory value into generated HTML without neutralizing markup or script; the affected field and handler are undisclosed. Low-privilege portal access and a victim viewing the crafted content are required, and execution is confined to the victim's browser context.

CVSS severityUnavailable
Unscored
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in the Local Directory page of Yealink SIP-T21P E2 52.84.0.15 allows remote authenticated users to execute browser script. The page places a directory value into generated HTML without neutralizing markup or script; the affected field and handler are undisclosed. Low-privilege portal access and a victim viewing the crafted content are required, and execution is confined to the victim's browser context.

The record

CVE
CVE-2025-14228
Published
Dec 8, 2025
Updated
Dec 8, 2025
Vendor
Yealink
Product
SIP-T21P E2
Classifications
CWE-79, CWE-94, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 8, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 8, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=52.84.0.15

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Yealink · SIP-T21P E2version=52.84.0.15

Published CVSS scores

5.1VulDB CNACVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
3.5VulDB CNACVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R
4.0VulDB CNAAV:N/AC:L/Au:S/C:N/I:P/A:N/E:POC/RL:ND/RC:UR
3.5VulDB CNACVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-94Improper Control of Generation of Code ('Code Injection')
T1059.007JavaScript/JScript

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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