CVE-2026-9105

Authenticated Stack-Based Buffer Overflow in TP-Link TL-WR841N Web Interface

MEDIUM
6.5
CVSS Score
Published: June 29, 2026 at 04:05 PM UTC
Updated: October 25, 2026 at 09:10 PM UTC
1 product affected across 1 vendorTl WR841N Firmware· also runs on 1 platform

Using TL-WR841M v14 by TP-Link Systems Inc.?

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Severity
MEDIUM6.5
Exploit prediction
EPSS 1%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 14_260518
Affected range stops below 14_260518, so it looks safe — our inference, not a vendor statement

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

Affected range stops below 14_260518, so it looks safe — our inference, not a vendor statement
Affected range stops below V14_260518, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (3)

PatchProduct
Source: f23511db-6c3e-4e32-a477-6aa17d310630
https://www.tp-link.com/en/support/download/tl-wr841n/v14/#Firmware
PatchProduct
Source: f23511db-6c3e-4e32-a477-6aa17d310630
https://www.tp-link.com/us/support/download/tl-wr841n/v14/#Firmware
Vendor Advisory
Source: f23511db-6c3e-4e32-a477-6aa17d310630
https://www.tp-link.com/us/support/faq/5152/

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-121CWE-787

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