# CVE-2021-35961: TAIWAN SECOM CO., LTD., Door Access Control and Personnel Attendance Management system - Use of Hard-coded Credentials

> Remote attackers can use hard-coded admin credentials to gain highest privileges in the Dr. ID Door Access Control system.

- **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:** 16 Jul 2021
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-52qj-6cff-vhwq

## What is CVE-2021-35961?

CVE-2021-35961 is a critical vulnerability in TAIWAN SECOM CO., LTD., Door Access Control and Personnel Attendance Management system, published on 16 Jul 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Dr. ID Door Access Control and Personnel Attendance Management system uses the hard-code admin default credentials that allows remote attackers to access the system through the default password and obtain the highest permission.

Weakness: CWE-798 (Use of Hard-coded Credentials)

## Which versions are affected by CVE-2021-35961?

It affects 1 product.


Products: Secom Dr.id Access Control.

## How do I fix CVE-2021-35961?

No fix has been published for CVE-2021-35961 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-35961 being exploited?

There is no known exploitation of CVE-2021-35961 in the wild and no public exploit code.

## Other vulnerabilities in TAIWAN SECOM CO., LTD., Door Access Control and Personnel Attendance Management system

- [CVE-2024-7731](https://insights.sbomify.com/CVE-2024-7731/): SECOM Dr.ID Access control system - SQL injection (critical 9.8)
- [CVE-2020-3934](https://insights.sbomify.com/CVE-2020-3934/): TAIWAN SECOM CO., LTD. - Pre-auth SQL Injection (critical 9.8)
- [CVE-2020-3935](https://insights.sbomify.com/CVE-2020-3935/): TAIWAN SECOM CO., LTD. – Sensitivity Information Exposure (high 7.5)
- [CVE-2022-26671](https://insights.sbomify.com/CVE-2022-26671/): TAIWAN SECOM CO., LTD., a xDoor Access Control and Personnel Attendance Management system - Hard-coded Credentials (high 7.3)
- [CVE-2020-3933](https://insights.sbomify.com/CVE-2020-3933/): TAIWAN SECOM CO., LTD. - User Account Enumeration (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-35961 and fix it if it is affected.

What it is: CVE-2021-35961 is a critical vulnerability in TAIWAN SECOM CO., LTD., Door Access Control and Personnel Attendance Management system, published on 16 Jul 2021. 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-2021-35961 in the wild and no public exploit code.

Affected product: TAIWAN SECOM CO., LTD., Door Access Control and Personnel Attendance Management system. 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-2021-35961/ (Markdown: https://insights.sbomify.com/CVE-2021-35961/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-35961
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-35961
- OSV: https://osv.dev/vulnerability/CVE-2021-35961

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From sbomify Insights: https://insights.sbomify.com/CVE-2021-35961/
Summaries are generated and may contain mistakes; the official description above is the record.