---
title: "CVE-2026-43852: Unspecified Product - Unrestricted File Upload"
description: "An unspecified product contains an unrestricted file write vulnerability caused by insufficient validation, letting authenticated attackers write files to arbitrary locations on the system, exploit requires authentication."
url: https://panop.io/threat-heartbeat/CVE-2026-43852/
---

# CVE-2026-43852 Unspecified Product - Unrestricted File Upload

An unspecified product contains an unrestricted file write vulnerability caused by insufficient validation, letting authenticated attackers write files to arbitrary locations on the system, exploit requires authentication.

CVSS base score 8.2 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-43852)

## Details

Type

Unrestricted File Upload

Impact

File System Write

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Published

20 October 2026

Updated

20 October 2026

## Vendor fix

Update to the latest version.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-43852](https://nvd.nist.gov/vuln/detail/CVE-2026-43852)
- [https://www.advantech.com/en/security-advisory](https://www.advantech.com/en/security-advisory)
- [https://www.csa.gov.sg/alerts-and-advisories/alerts/al-2026-149](https://www.csa.gov.sg/alerts-and-advisories/alerts/al-2026-149)

[← All CVEs](https://panop.io/threat-heartbeat/)

## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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