Is CVE-2026-41223 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-41223 being exploited in the wild.

How severe is CVE-2026-41223?

Critical severity, with a CVSS score of 9.1, published 20 October 2026.

Which products and versions are affected?

TOTOLINK X2000r TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327.

Is there a fix for CVE-2026-41223?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-41223 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-41223?

Check whether you run TOTOLINK X2000r at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-41223: Totolink X2000R stack-based buffer overflow in formMapDelDevice

CVE-2026-41223 · Severity: critical · CVSS 9.1 · Published 2026-10-20

The Totolink X2000R is a home router that manages network connections through a web administration interface. A stack-based buffer overflow in the device map configuration function allows authenticated attackers to execute arbitrary code on the router by sending a specially crafted HTTP request. This could give an attacker complete control over the router, enabling them to intercept network traffic, modify settings, or use the device as a foothold for further attacks.

Technologies: TOTOLINK X2000r. Vendors: TOTOLINK.

Quick answers

Is CVE-2026-41223 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-41223 being exploited in the wild.
How severe is CVE-2026-41223?: Critical severity, with a CVSS score of 9.1, published 20 October 2026.
Which products and versions are affected?: TOTOLINK X2000r TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327.
Is there a fix for CVE-2026-41223?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-41223 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-41223?: Check whether you run TOTOLINK X2000r at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A stack-based buffer overflow exists in the boa web server's formMapDelDevice() function, which unsafely passes user-controlled input (macstr parameter) via execve to the /bin/map_del_device binary. The child process copies this parameter directly to a fixed-size stack buffer using strcpy without bounds checking, allowing an attacker to overflow the stack and achieve arbitrary code execution. The vulnerability requires prior authentication via the web interface but no additional user interaction.

Affected products

Totolink X2000R TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327

Timeline

2026-10-20: disclosed

References

https://talosintelligence.com/vulnerability_reports/TALOS-2026-2390

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