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Description

A vulnerability was detected in Totolink N300RH 3.2.4-B20220812. This vulnerability affects the function setMacFilterRules of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. The manipulation of the argument mac_address results in buffer overflow. The attack may be launched remotely. The exploit is now public and may be used.

PUBLISHED Reserved 2026-05-03 | Published 2026-05-04 | Updated 2026-05-04 | Assigner VulDB




HIGH: 8.7CVSS: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
HIGH: 8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
HIGH: 8.8CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
9.0AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR

Problem types

Buffer Overflow

Memory Corruption

Product status

3.2.4-B20220812
affected

Timeline

2026-05-03:Advisory disclosed
2026-05-03:VulDB entry created
2026-05-03:VulDB entry last update

Credits

wxhwxhwxh_mie (VulDB User) reporter

References

vuldb.com/vuln/360925 (VDB-360925 | Totolink N300RH POST Request cstecgi.cgi setMacFilterRules buffer overflow) vdb-entry technical-description

vuldb.com/vuln/360925/cti (VDB-360925 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/submit/807204 (Submit #807204 | Totolink N300RH N300RH V3_Firmware V3.2.4-B20220812 Buffer Overflow) third-party-advisory

lavender-bicycle-a5a.notion.site/...781f809cb952cdcb71ce90d8 exploit

www.totolink.net/ product

cve.org (CVE-2026-7750)

nvd.nist.gov (CVE-2026-7750)

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