CVE-2023-40460 Improper input leads to DoS

High 7.1 Published 4 Dec 2023 Updated 25 Feb 2026

An authenticated user can execute client-side scripts via improper file validation in ACEManager, causing device disruption until restart.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2023-40460?

CVE-2023-40460 is a high-severity cross-site scripting vulnerability in SierraWireless ALEOS, published on 4 Dec 2023. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

The ACEManager component of ALEOS 4.16 and earlier does not

validate uploaded file names and types, which could potentially allow

an authenticated user to perform client-side script execution within

ACEManager, altering the device functionality until the device is

restarted.

Weakness: CWE-79, CWE-434

Which versions are affected by CVE-2023-40460?

It affects 1 product.

Products include Sierrawireless Aleos.

How do I fix CVE-2023-40460?

No fix has been published for CVE-2023-40460 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2023-40460 being exploited?

There is no known exploitation of CVE-2023-40460 in the wild and no public exploit code.

Sources

Also known as GHSA-fv86-7h6v-h3qg.