# CVE-2020-1789: Auth bypass in OSCA-550, OSCA-550A, OSCA-550AX, OSCA-550X

> Attackers can bypass authentication on Huawei OSCA devices by using weak credentials to perform unauthorized operations.

- **Severity:** Medium 6.8 (`CVSS:3.1/AV:P/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:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 18 Feb 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-ph9c-5f5m-xhgq

## What is CVE-2020-1789?

CVE-2020-1789 is a medium-severity authentication bypass vulnerability in Huawei OSCA-550, OSCA-550A, OSCA-550AX, OSCA-550X, published on 18 Feb 2020. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Huawei OSCA-550, OSCA-550A, OSCA-550AX, and OSCA-550X products with version 1.0.1.21(SP3) have an insufficient authentication vulnerability. The software does not require a strong credential when the user trying to do certain operations. Successful exploit could allow an attacker to pass the authentication and do certain operations by a weak credential.

Weakness: CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2020-1789?

It affects 4 products.


Products: Huawei Osca-550 Firmware, Huawei Osca-550a Firmware, Huawei Osca-550ax Firmware, Huawei Osca-550x Firmware.

## How do I fix CVE-2020-1789?

No fix has been published for CVE-2020-1789 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-1789 being exploited?

There is no known exploitation of CVE-2020-1789 in the wild and no public exploit code.

## Other vulnerabilities in Huawei OSCA-550, OSCA-550A, OSCA-550AX, OSCA-550X

- [CVE-2020-1802](https://insights.sbomify.com/CVE-2020-1802/): Other in OSCA-550;OSCA-550A;OSCA-550AX;OSCA-550X (medium 4.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-1789 and fix it if it is affected.

What it is: CVE-2020-1789 is a medium-severity authentication bypass vulnerability in Huawei OSCA-550, OSCA-550A, OSCA-550AX, OSCA-550X, published on 18 Feb 2020. 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-2020-1789 in the wild and no public exploit code.

Affected product: Huawei OSCA-550, OSCA-550A, OSCA-550AX, OSCA-550X. 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-2020-1789/ (Markdown: https://insights.sbomify.com/CVE-2020-1789/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-1789
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-1789
- OSV: https://osv.dev/vulnerability/CVE-2020-1789

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From sbomify Insights: https://insights.sbomify.com/CVE-2020-1789/
Summaries are generated and may contain mistakes; the official description above is the record.