High 8.8Published Mar 27, 2026

CVE-2026-4976A vulnerability was found in Totolink LR350 9.3.5u.6369_B20220309.

Updated under an hour ago (2026-10-19 08:50 UTC)

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It affects totolink lr350_firmware. Add what you run to find out whether that includes you.

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Every CVE for totolink lr350_firmware

Exploited in the last 30 days

A vulnerability was found in Totolink LR350 9.3.5u.6369_B20220309. This vulnerability affects the function setWiFiGuestCfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument ssid results in buffer overflow. The attack can be launched remotely. The exploit has been made public and could be used.

CVSS: 8.8 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-119, CWE-120
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Analyzed
Record last updated: Jun 17, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

totolink lr350_firmware totolink:lr350_firmware	9.3.5u.6369_b20220309	NVD

References

https://lavender-bicycle-a5a.notion.site/TOTOLINK-LR350-setWiFiGuestCfg-32153a41781f8048a918c1c78e95064e?source=copy_linkexploit, third-party-advisory
https://vuldb.com/?ctiid.353863permissions-required, vdb-entry
https://vuldb.com/?id.353863third-party-advisory, vdb-entry
https://vuldb.com/?submit.778274third-party-advisory, vdb-entry
https://www.totolink.net/product

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.