TOTOLINK A3600R cstecgi.cgi setdeviceName buffer overflow

published 2024-07-29 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-48142

cvss: 8.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.2%; EPSS 1.2% chance of exploitation in 30 days, percentile 67%
public exploits: 0; none known

A vulnerability, which was classified as critical, was found in TOTOLINK A3600R 4.1.2cu.5182_B20201102. This affects the function setdeviceName of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument deviceMac/deviceName leads to buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-272595. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: total
Assessed: 2 y ago (2024-07-29)

Exploit prediction

1.18% chance of exploitation in the next 30 days, higher than 67% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/abcdefg-png/IoT-vulnerable/blob/main/TOTOLINK/A3600R/setDeviceName.md referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	4.0	8.7	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CNA	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA	3.0	8.8	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA	2.0	9.0	AV:N/AC:L/Au:S/C:C/I:C/A:C
CNA	4.0	8.7	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

TOTOLINK A3600R
totolink a3600r_firmware

Classification

Weakness

CWE-120 Buffer Copy without Checking Size of Input
CWE-77 Improper Neutralization of Special Elements used in a Command

References

github.com /abcdefg-png/IoT-vulnerable/blob/main/TOTOLINK/A3600R/setDeviceName.md
exploit, third-party-advisory
vuldb.com /?id.272595
vdb-entry, technical-description, third-party-advisory
vuldb.com /?ctiid.272595
signature, permissions-required, third-party-advisory
vuldb.com /?submit.378041
third-party-advisory

Sources

CVE List CVE-2024-7174
NVD CVE-2024-7174

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary