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

> An adjacent attacker can intercept and decrypt SSH traffic on TP-Link TL-WR820N routers due to weak cryptographic algorithm support.

- **Severity:** Medium 6.0 (`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`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 29 Dec 2025
- **Updated:** 2 Jan 2026
- **Also known as:** GHSA-w5v4-r6mh-235c

## What is CVE-2025-14175?

CVE-2025-14175 is a medium-severity vulnerability in TP-Link Systems Inc. TL-WR820N v2.8, published on 29 Dec 2025. It can only be exploited from the same machine or local network, with no action from the victim.

### Official 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.

Weakness: CWE-327 (Use of a Broken or Risky Cryptographic Algorithm)

## Which versions are affected by CVE-2025-14175?

It affects 1 product.


Products: Tp-Link Tl-Wr820n Firmware.

## How do I fix CVE-2025-14175?

No fix has been published for CVE-2025-14175 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-14175 being exploited?

There is no known exploitation of CVE-2025-14175 in the wild and no public exploit code.

Public exploit code:

- Responsible disclosure write-up for CVE-2025-14175 involving weak cryptographic algorithm support in the SSH server of TP-Link TL-WR820N. (github_poc): https://github.com/CyberVinner/TP-Link-TL-WR820N-CVE-2025-14175

## Other vulnerabilities in TP-Link Systems Inc. TL-WR820N v2.8

- [CVE-2026-15141](https://insights.sbomify.com/CVE-2026-15141/): Referer Validation Bypass in TL-WR820N Web Management Interface (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-14175 and fix it if it is affected.

What it is: CVE-2025-14175 is a medium-severity vulnerability in TP-Link Systems Inc. TL-WR820N v2.8, published on 29 Dec 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-14175 in the wild and no public exploit code.

Affected product: TP-Link Systems Inc. TL-WR820N v2.8. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2025-14175/ (Markdown: https://insights.sbomify.com/CVE-2025-14175/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-14175
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-14175
- OSV: https://osv.dev/vulnerability/CVE-2025-14175

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-14175/
Summaries are generated and may contain mistakes; the official description above is the record.