CVE-2026-15429 Privilege Escalation via Improper Input Sanitization in TP-Link Archer VX1800v
An authenticated user can inject newlines into configuration data to gain elevated administrative privileges on TP-Link Archer VX1800v routers.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-15429?
CVE-2026-15429 is a medium-severity vulnerability in TP-Link Systems Inc. Archer VX1800v v1, published on 14 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A privilege escalation vulnerability exists in the HTTP authentication component in Archer VX1800v v1. Improper handling of user-controlled input may allow newline characters to be injected into internally constructed configuration data.
An authenticated user with sufficient privileges may be able to modify account settings and gain elevated administrative privileges.
Weakness: CWE-93
Which versions are affected by CVE-2026-15429?
It affects 1 product.
Products include Tp-Link Archer Vx1800v Firmware.
How do I fix CVE-2026-15429?
No fix has been published for CVE-2026-15429 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-15429 being exploited?
There is no known exploitation of CVE-2026-15429 in the wild and no public exploit code.
Other vulnerabilities in TP-Link Systems Inc. Archer VX1800v v1
Sources
Also known as GHSA-h838-7g67-j96h.