# CVE-2020-35575: Information disclosure in n/a

> Remote attackers can obtain administrative credentials from the web interface, leading to full device compromise on affected TP-Link routers.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 26 Dec 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-hq6f-9m26-g47r

## What is CVE-2020-35575?

CVE-2020-35575 is a critical vulnerability in n/a, published on 26 Dec 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A password-disclosure issue in the web interface on certain TP-Link devices allows a remote attacker to get full administrative access to the web panel. This affects WA901ND devices before 3.16.9(201211) beta, and Archer C5, Archer C7, MR3420, MR6400, WA701ND, WA801ND, WDR3500, WDR3600, WE843N, WR1043ND, WR1045ND, WR740N, WR741ND, WR749N, WR802N, WR840N, WR841HP, WR841N, WR842N, WR842ND, WR845N, WR940N, WR941HP, WR945N, WR949N, and WRD4300 devices.

## Which versions are affected by CVE-2020-35575?

It affects 27 products.


Products: Tp-Link Archer C5 Firmware, Tp-Link Archer C7 Firmware, Tp-Link Mr3420 Firmware, Tp-Link Mr6400 Firmware, Tp-Link Wa701nd Firmware, Tp-Link Wa801nd Firmware, Tp-Link Wa901nd Firmware, Tp-Link Wdr3500 Firmware, Tp-Link Wdr3600 Firmware, Tp-Link We843n Firmware, Tp-Link Wr1043nd Firmware, Tp-Link Wr1045nd Firmware, Tp-Link Wr740n Firmware, Tp-Link Wr741nd Firmware, Tp-Link Wr749n Firmware, Tp-Link Wr802n Firmware, Tp-Link Wr840n Firmware, Tp-Link Wr841hp Firmware, Tp-Link Wr841n Firmware, Tp-Link Wr842n Firmware and 7 more.

## How do I fix CVE-2020-35575?

No fix has been published for CVE-2020-35575 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-35575 being exploited?

There is no known exploitation of CVE-2020-35575 in the wild and no public exploit code.

Public exploit code:

- password-disclosure issue in the web interface on certain TP-Link devices (github_poc): https://github.com/dylvie/CVE-2020-35575-TP-LINK-TL-WR841ND-password-disclosure

## Other vulnerabilities in n/a

- [CVE-2015-3035](https://insights.sbomify.com/CVE-2015-3035/): TP-Link Multiple Archer Devices Directory Traversal (high 7.5, exploited in the wild)
- [CVE-2022-4498](https://insights.sbomify.com/CVE-2022-4498/): Memory corruption in Archer C5 (critical 9.8)
- [CVE-2022-4499](https://insights.sbomify.com/CVE-2022-4499/): Information disclosure in Archer C5 (high 7.5)
- [CVE-2018-19537](https://insights.sbomify.com/CVE-2018-19537/): Command injection in n/a (high 7.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-35575 and fix it if it is affected.

What it is: CVE-2020-35575 is a critical vulnerability in n/a, published on 26 Dec 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-35575 in the wild and no public exploit code.

Affected product: n/a. 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-2020-35575/ (Markdown: https://insights.sbomify.com/CVE-2020-35575/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-35575
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-35575
- OSV: https://osv.dev/vulnerability/CVE-2020-35575

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-35575/
Summaries are generated and may contain mistakes; the official description above is the record.