# CVE-2009-1754: Auth bypass in n/a

> Attackers can bypass certificate checks to access other applications' data by installing a package with a shared user ID.

- **Severity:** Medium 4.3 (`AV:N/AC:M/Au:N/C:P/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 26 May 2009
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-cvpc-5hfr-wxhv

## What is CVE-2009-1754?

CVE-2009-1754 is a medium-severity authentication bypass vulnerability in Google Android, published on 26 May 2009. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

The PackageManagerService class in services/java/com/android/server/PackageManagerService.java in Android 1.5 through 1.5 CRB42 does not properly check developer certificates during processing of sharedUserId requests at an application's installation time, which allows remote user-assisted attackers to access application data by creating a package that specifies a shared user ID with an arbitrary application.

Weakness: CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2009-1754?

It affects 1 product.


Products: Google Android.

## How do I fix CVE-2009-1754?

No fix has been published for CVE-2009-1754 yet. Limit exposure of the affected software until one is available.

## Is CVE-2009-1754 being exploited?

There is no known exploitation of CVE-2009-1754 in the wild and no public exploit code.

## Other vulnerabilities in Google Android

- [CVE-2026-58704](https://insights.sbomify.com/CVE-2026-58704/): Google Pixel Improper Authorization (high 8.8, exploited in the wild)
- [CVE-2025-48543](https://insights.sbomify.com/CVE-2025-48543/): Android Runtime Use-After-Free (high 8.8, exploited in the wild)
- [CVE-2023-35674](https://insights.sbomify.com/CVE-2023-35674/): Android Framework Privilege Escalation (high 8.8, exploited in the wild)
- [CVE-2025-48595](https://insights.sbomify.com/CVE-2025-48595/): Android Framework Integer Overflow (high 8.4, exploited in the wild)
- [CVE-2024-32896](https://insights.sbomify.com/CVE-2024-32896/): Android Pixel Privilege Escalation (high 8.1, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2009-1754 and fix it if it is affected.

What it is: CVE-2009-1754 is a medium-severity authentication bypass vulnerability in Google Android, published on 26 May 2009. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2009-1754 in the wild and no public exploit code.

Affected product: Google Android. 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-2009-1754/ (Markdown: https://insights.sbomify.com/CVE-2009-1754/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2009-1754
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2009-1754
- OSV: https://osv.dev/vulnerability/CVE-2009-1754

---
From sbomify Insights: https://insights.sbomify.com/CVE-2009-1754/
Summaries are generated and may contain mistakes; the official description above is the record.