CVE-2023-7220

Name: CVE-2023-7220
Creator: NVD / NIST
Published: 2024-01-09T08:15:36.49+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.50%

Last modified Jun 17, 2026

CVE-2023-7220 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A vulnerability was found in Totolink NR1800X 9.1.0u.6279_B20210910 and classified as critical. Affected by this issue is the function loginAuth of the file /cgi-bin/cstecgi.cgi. EPSS estimates a 1.50% chance of exploitation in the next 30 days.

Description

A vulnerability was found in Totolink NR1800X 9.1.0u.6279_B20210910 and classified as critical. Affected by this issue is the function loginAuth of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument password leads to stack-based buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. VDB-249854 is the identifier assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

1.50%

71.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-121

Affected Software

Vendor	Product	Versions
Totolink	Nr1800x Firmware	9.1.0u.6279_b20210910

References

https://github.com/jylsec/vuldb/blob/main/TOTOLINK/NR1800X/1/README.mdExploit, Third Party Advisory
https://vuldb.com/?ctiid.249854Permissions Required, Third Party Advisory
https://vuldb.com/?id.249854Permissions Required, Third Party Advisory
https://github.com/jylsec/vuldb/blob/main/TOTOLINK/NR1800X/1/README.mdExploit, Third Party Advisory
https://vuldb.com/?ctiid.249854Permissions Required, Third Party Advisory
https://vuldb.com/?id.249854Permissions Required, Third Party Advisory

Timeline

Published: Jan 9, 2024
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-7220?

How severe is CVE-2023-7220?

CVE-2023-7220 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.50% probability of exploitation in the next 30 days.

How do I fix CVE-2023-7220?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-7220?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST