CVE-2025-60333Public exploitNetwork attack vector

Unauthenticated service interruption via unchecked strcpy

Published Oct 22, 2025 · Updated Oct 22, 2025

Stack-based buffer overflow in TOTOLINK N600R 4.3.0cu.7866_B20220506 allows remote attackers to interrupt service via a crafted HTTP request. The setWiFiMultipleConfig handler in cstecgi.cgi copies the wepkey2 parameter into a stack buffer with strcpy without checking its length. Authentication is not required, and an oversized value corrupts stack memory and interrupts router availability.

CVSS severity7.5
High
EPSS probability0.46%
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 TOTOLINK N600R 4.3.0cu.7866_B20220506 allows remote attackers to interrupt service via a crafted HTTP request. The setWiFiMultipleConfig handler in cstecgi.cgi copies the wepkey2 parameter into a stack buffer with strcpy without checking its length. Authentication is not required, and an oversized value corrupts stack memory and interrupts router availability.

The record

CVE
CVE-2025-60333
Published
Oct 22, 2025
Updated
Oct 22, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-121, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 22, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 22, 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 privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
T1499.004Endpoint Denial of Service: Application or System Exploitation

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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