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Vulnerability record · CVE-2025-60336 · published 22 October 2025

CVE-2025-60336: Totolink n600r firmware null pointer dereference vulnerability

TTotolink · N600r Firmware

A NULL pointer dereference in the sub_41773C function of TOTOLINK N600R v4.3.0cu.7866_B20220506 allows attackers to cause a Denial of Service (DoS) via a crafted HTTP request.

7.5 CVSS 3.1 High EPSS 1.8% · top 22.7% CWE-476 · NULL pointer dereference
7.5CVSS 3.1 base score
1.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References, 1 tagged exploit
17 Jun 2026Last modified by NVD

Description

A NULL pointer dereference in the sub_41773C function of TOTOLINK N600R v4.3.0cu.7866_B20220506 allows attackers to cause a Denial of Service (DoS) via a crafted HTTP request.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/z472421519/BinaryAudit/blob/main/PoC/NPD/TOTOLink/sub_41773C/sub_41773C.md ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2025-51390Totolink n600r firmware os command injection vulnerabilityTOTOLINK N600R V4.3.0cu.7647_B20210106 was discovered to contain a command injection vulnerability via the pin parameter in the setWiFiWpsConfig func…EPSS 1.8%9.8CVE-2025-46060Totolink n600r firmware classic buffer overflow vulnerabilityBuffer Overflow vulnerability in TOTOLINK N600R v4.3.0cu.7866_B2022506 allows a remote attacker to execute arbitrary code via the UPLOAD_FILENAME com…EPSS 0.97%9.8CVE-2025-22900Totolink n600r firmware stack-based buffer overflow vulnerabilityTotolink N600R v4.3.0cu.7647_B20210106 was discovered to contain a stack overflow via the macCloneMac parameter in the setWanConfig function.EPSS 0.55%9.8CVE-2023-43141Totolink a3700r firmware improper access control vulnerabilityTOTOLINK A3700R V9.1.2u.6134_B20201202 and N600R V5.3c.5137 are vulnerable to Incorrect Access Control.EPSS 0.79%9.8CVE-2022-29391Totolink n600r firmware out-of-bounds write vulnerabilityTOTOLINK N600R V4.3.0cu.7647_B20210106 was discovered to contain a stack overflow via the comment parameter in the function FUN_004200c8.EPSS 1.7%9.8CVE-2022-29392Totolink n600r firmware out-of-bounds write vulnerabilityTOTOLINK N600R V4.3.0cu.7647_B20210106 was discovered to contain a stack overflow via the comment parameter in the function FUN_00418c24.EPSS 1.7%9.8CVE-2022-29393Totolink n600r firmware out-of-bounds write vulnerabilityTOTOLINK N600R V4.3.0cu.7647_B20210106 was discovered to contain a stack overflow via the comment parameter in the function FUN_004192cc.EPSS 1.7%9.8CVE-2022-29394Totolink n600r firmware out-of-bounds write vulnerabilityTOTOLINK N600R V4.3.0cu.7647_B20210106 was discovered to contain a stack overflow via the macAddress parameter in the function FUN_0041b448.EPSS 1.7%

Source: NIST National Vulnerability Database (record CVE-2025-60336), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.