CVE-2026-9105

Description

An authenticated stack-based buffer overflow vulnerability exists in the web management interface of TP-Link TL-WR841N v14. A remote authenticated attacker can send crafted HTTP requests to cause the embedded web server to overflow a stack buffer, resulting in a crash of the affected process. Successful exploitation results in a denial-of-service condition, causing the device to crash and automatically reboot.

CVSS v3.1 Score

6.5

MEDIUM

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

EPSS — Exploit Prediction

0.0055

Probability of exploitation

0.42%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-121 CWE-121

CWE-787 Out-of-bounds Write

Affected Products

Vendor	Product	Versions
tp-link	tl-wr841n_firmware	< 14_260518
tp-link	tl-wr841n	All

References

Advisories & Patches

https://www.tp-link.com/us/support/faq/5152/

Other References

https://www.tp-link.com/en/support/download/tl-wr841n/v14/#Firmware https://www.tp-link.com/us/support/download/tl-wr841n/v14/#Firmware

Frequently Asked Questions

What is CVE-2026-9105? +

An authenticated stack-based buffer overflow vulnerability exists in the web management interface of TP-Link TL-WR841N v14. A remote authenticated attacker can send crafted HTTP requests to cause the embedded web server to overflow a stack buffer, resulting in a crash of the affected process. Successful exploitation results in a denial-of-service condition, causing the device to crash and automatically reboot. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2026-9105? +

CVE-2026-9105 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0055, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-9105? +

CVE-2026-9105 affects products from tp-link, specifically: tl-wr841n, tl-wr841n_firmware. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-9105? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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