CVE-2024-30939Public exploit

Physical account takeover via flawed factory reset

Published Apr 25, 2024 · Updated Sep 6, 2024

Improper authentication in Yealink VP59 Teams firmware 91.15.0.118 allows physically proximate attackers to take over an account. The disclosed proof of concept uses crafted physical key presses against the factory-reset procedure after a Teams account is configured and the phone locks. Physical access to the device is required, and Yealink has not published which authentication check the reset path omits.

CVSS severity6.8
Medium
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authentication in Yealink VP59 Teams firmware 91.15.0.118 allows physically proximate attackers to take over an account. The disclosed proof of concept uses crafted physical key presses against the factory-reset procedure after a Teams account is configured and the phone locks. Physical access to the device is required, and Yealink has not published which authentication check the reset path omits.

The record

CVE
CVE-2024-30939
Published
Apr 25, 2024
Updated
Sep 6, 2024
Vendor
Yealink
Product
Yealink VP59 Firmware
Classifications
CWE-287, T1078
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 25, 2024CVE publishedPublication date reported by the CVE source.
  2. Sep 6, 2024Record 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=91.15.0.118

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

Yealink · Yealink VP59 Firmwareversion=91.15.0.118

Published CVSS scores

6.8CISA-ADPCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
6.8YealinkCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-287Improper Authentication
T1078Valid Accounts

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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