CVE-2025-60336Public exploitNetwork attack vector

Unauthenticated service crash via unchecked allocation failure

Published Oct 22, 2025 · Updated Oct 22, 2025

NULL pointer dereference in TOTOLINK N600R 4.3.0cu.7866_B20220506 allows remote attackers to crash its CGI service via an HTTP request. The cstecgi.cgi setUploadSetting handler adds attacker-controlled headOffset and ContentLength values, then passes a failed allocation to memset without checking for NULL. No credentials or user interaction are required; exploitation interrupts the CGI service, with no reported data access or code execution.

CVSS severity7.5
High
EPSS probability1.65%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in TOTOLINK N600R 4.3.0cu.7866_B20220506 allows remote attackers to crash its CGI service via an HTTP request. The cstecgi.cgi setUploadSetting handler adds attacker-controlled headOffset and ContentLength values, then passes a failed allocation to memset without checking for NULL. No credentials or user interaction are required; exploitation interrupts the CGI service, with no reported data access or code execution.

The record

CVE
CVE-2025-60336
Published
Oct 22, 2025
Updated
Oct 22, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-476, T1499
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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499Endpoint Denial of Service

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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