CVE-2024-4123Public exploitNetwork attack vector

Authenticated router crash via port-mapping stack overflow

Published Apr 24, 2024 · Updated Aug 1, 2024

Stack-based buffer overflow in Tenda W15E 15.11.0.14 allows remote authenticated users to crash the router via crafted port-mapping requests. The /goform/SetPortMapping handler's formSetPortMapping function writes oversized portMappingServer, portMappingProtocol, portMappingWan, porMappingtInternal, or portMappingExternal values beyond a stack buffer. A valid management session is required, and successful exploitation corrupts process memory and interrupts router services.

CVSS severity8.8
High
EPSS probability1.68%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in Tenda W15E 15.11.0.14 allows remote authenticated users to crash the router via crafted port-mapping requests. The /goform/SetPortMapping handler's formSetPortMapping function writes oversized portMappingServer, portMappingProtocol, portMappingWan, porMappingtInternal, or portMappingExternal values beyond a stack buffer. A valid management session is required, and successful exploitation corrupts process memory and interrupts router services.

The record

CVE
CVE-2024-4123
Published
Apr 24, 2024
Updated
Aug 1, 2024
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
W15E
Classifications
CWE-787, CWE-121, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 24, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 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=15.11.0.14

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Shenzhen Tenda Technology Co., Ltd. · W15Eversion=15.11.0.14

Published CVSS scores

8.8NISTCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.8VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.0VulDBAV:N/AC:L/Au:S/C:C/I:C/A:C

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.

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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-787Out-of-bounds Write
CWE-121Stack-based Buffer Overflow
T1190Exploit Public-Facing Application

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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