# CVE-2021-40503: Information disclosure in SAP GUI for Windows

> A local attacker can retrieve the user's password from SAP GUI for Windows, enabling unauthorized access to the backend system.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 10 Nov 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-j8r9-mcxg-mjg4

## What is CVE-2021-40503?

CVE-2021-40503 is a high-severity vulnerability in SAP GUI for Windows, published on 10 Nov 2021. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

An information disclosure vulnerability exists in SAP GUI for Windows - versions < 7.60 PL13, 7.70 PL4, which allows an attacker with sufficient privileges on the local client-side PC to obtain an equivalent of the user’s password. With this highly sensitive data leaked, the attacker would be able to logon to the backend system the SAP GUI for Windows was connected to and launch further attacks depending on the authorizations of the user.

Weakness: CWE-522 (Insufficiently Protected Credentials)

## Which versions are affected by CVE-2021-40503?

It affects 1 product.


Products: Sap Gui for Windows.

## How do I fix CVE-2021-40503?

No fix has been published for CVE-2021-40503 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-40503 being exploited?

There is no known exploitation of CVE-2021-40503 in the wild and no public exploit code.

## Other vulnerabilities in SAP GUI for Windows

- [CVE-2017-6950](https://insights.sbomify.com/CVE-2017-6950/): Code injection in n/a (critical 9.8)
- [CVE-2023-32113](https://insights.sbomify.com/CVE-2023-32113/): Information Disclosure vulnerability in SAP GUI for Windows (high 7.5)
- [CVE-2024-39600](https://insights.sbomify.com/CVE-2024-39600/): [CVE-2024-39600] Information Disclosure vulnerability in SAP GUI for Windows (medium 5.0)
- [CVE-2021-27612](https://insights.sbomify.com/CVE-2021-27612/): Open redirect in SAP GUI for Windows (low 3.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-40503 and fix it if it is affected.

What it is: CVE-2021-40503 is a high-severity vulnerability in SAP GUI for Windows, published on 10 Nov 2021. 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-2021-40503 in the wild and no public exploit code.

Affected product: SAP GUI for Windows. 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-2021-40503/ (Markdown: https://insights.sbomify.com/CVE-2021-40503/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-40503
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-40503
- OSV: https://osv.dev/vulnerability/CVE-2021-40503

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-40503/
Summaries are generated and may contain mistakes; the official description above is the record.