CVE-2026-9105

Authenticated reboot via HTTP stack overflow

Published Jun 29, 2026 · Updated Jun 29, 2026

Stack-based buffer overflow in TP-Link TL-WR841N v14 allows remote authenticated users to reboot the router via crafted HTTP requests. The embedded web server overflows a stack buffer while handling the requests, but TP-Link has not disclosed the vulnerable handler or exact write operation. Exploitation requires high-privileged authentication and adjacent-network access, and the bounded impact is a device crash followed by an automatic reboot.

CVSS severity6.8
Medium
EPSS probability1.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Stack-based buffer overflow in TP-Link TL-WR841N v14 allows remote authenticated users to reboot the router via crafted HTTP requests. The embedded web server overflows a stack buffer while handling the requests, but TP-Link has not disclosed the vulnerable handler or exact write operation. Exploitation requires high-privileged authentication and adjacent-network access, and the bounded impact is a device crash followed by an automatic reboot.

The record

CVE
CVE-2026-9105
Published
Jun 29, 2026
Updated
Jun 29, 2026
Vendor
TP-Link Systems Inc.
Product
TL-WR841N
Classifications
CWE-121, CWE-787, T1499.004
Attack vector
adjacent
Privileges
admin

Timeline

How it unfolded

  1. Jun 29, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 29, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <V14_260518

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesadmin

What is affected?

TP-Link Systems Inc. · TL-WR841Nversion=0 <V14_260518

Published CVSS scores

6.8TP-Link Systems Inc.CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
6.5National Institute of Standards and TechnologyCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
CWE-787Out-of-bounds Write
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo