CVE-2025-22903Network attack vector

Memory corruption via crafted WPS PIN

Published Apr 15, 2025 · Updated Apr 16, 2025

Stack overflow in TOTOLINK N600R firmware 4.3.0cu.7647_B20210106 allows remote authenticated users to overwrite memory via a crafted WPS PIN. Processing the pin parameter in setWiFiWpsConfig overruns a stack buffer; public records do not identify the exact copy operation or buffer size. Exploitation requires low-privileged access and user interaction; published sources do not establish whether the result is a crash or code execution.

CVSS severity4.6
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack overflow in TOTOLINK N600R firmware 4.3.0cu.7647_B20210106 allows remote authenticated users to overwrite memory via a crafted WPS PIN. Processing the pin parameter in setWiFiWpsConfig overruns a stack buffer; public records do not identify the exact copy operation or buffer size. Exploitation requires low-privileged access and user interaction; published sources do not establish whether the result is a crash or code execution.

The record

CVE
CVE-2025-22903
Published
Apr 15, 2025
Updated
Apr 16, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-121
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 15, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 16, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.6CISA-ADPCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L

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

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow

Public exploit references

No public exploit references are available in this record.

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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