CVE-2026-7749
published 2026-05-04CVE-2026-7749: A security vulnerability has been detected in Totolink N300RH 3.2.4-B20220812. This affects the function setWanConfig of the file /cgi-bin/cstecgi.cgi of the…
PriorityP267high8.8CVSS 3.1
AVNACLPRLUINSUCHIHAH
EPSS
0.56%
43.0th percentile
A security vulnerability has been detected in Totolink N300RH 3.2.4-B20220812. This affects the function setWanConfig of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. The manipulation of the argument priDns leads to buffer overflow. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used.
Affected
1 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| totolink | n300rh | — | — |
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvdv4.07.4HIGHCVSS: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:P/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
nvdv2.09.0CRITICALAV:N/AC:L/Au:S/C:C/I:C/A:C
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GHSA
GHSA-9639-rx99-qmgv: A security vulnerability has been detected in Totolink N300RH 3
ghsa_unreviewed·2026-05-04
CVE-2026-7749 [HIGH] CWE-119 GHSA-9639-rx99-qmgv: A security vulnerability has been detected in Totolink N300RH 3
A security vulnerability has been detected in Totolink N300RH 3.2.4-B20220812. This affects the function setWanConfig of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. The manipulation of the argument priDns leads to buffer overflow. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used.
VulDB
Totolink N300RH 3.2.4-B20220812 POST Request /cgi-bin/cstecgi.cgi setWanConfig priDns buffer overflow
vuldb·2026-05-03
CVE-2026-7749 [CRITICAL] Totolink N300RH 3.2.4-B20220812 POST Request /cgi-bin/cstecgi.cgi setWanConfig priDns buffer overflow
A vulnerability has been found in Totolink N300RH 3.2.4-B20220812 and classified as critical. This affects the function setWanConfig of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. The manipulation of the argument priDns leads to buffer overflow.
This vulnerability is listed as CVE-2026-7749. The attack may be initiated remotely. In addition, an exploit is available.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-05-04
Published