What is CVE-2026-1328?

CVE-2026-1328 is a high-severity vulnerability in Totolink Nr1800x, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.8/10. Published 2026-01-22.

How severe is CVE-2026-1328?

High severity. CVSS v3 base score is 8.8 out of 10.

Buffer overflow in Totolink Nr1800x

CVE-2026-1328

A vulnerability was detected in Totolink NR1800X 9.1.0u.6279_B20210910. Impacted is the function setWizardCfg of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. Performing a manipulation of the argument ssid results in…

Vulnerability class: Buffer Overflow

EPSS: 0.001 (20.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R.

Affected products

Totolink Nr1800x — versions 9.1.0u.6279_B20210910

Weakness classification (CWE)

References

VDB-342304 | Totolink NR1800X POST Request cstecgi.cgi setWizardCfg buffer overflow (vdb-entry, technical-description)
VDB-342304 | CTI Indicators (IOB, IOC, IOA) (signature, permissions-required)
Submit #735792 | TOTOLINK NR1800X NR1800X_Firmware V9.1.0u.6279_B20210910 Buffer Overflow (third-party-advisory)
lavender-bicycle-a5a.notion.site/TOTOLINK-NR1800X-setWizardCfg-2e453a41781f8056… (exploit)
www.totolink.net/ (product)

Frequently asked questions

What is CVE-2026-1328?: CVE-2026-1328 is a high-severity vulnerability in Totolink Nr1800x, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.8/10. Published 2026-01-22.
How severe is CVE-2026-1328?: High severity. CVSS v3 base score is 8.8 out of 10.