# CVE-2021-25375: Information disclosure in Samsung Email

> Remote attackers can access other users' email attachments by exploiting predictable attachment indices in the Samsung Email application.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/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:** 9 Apr 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-25v9-5xh2-9q3m

## What is CVE-2021-25375?

CVE-2021-25375 is a medium-severity vulnerability in Samsung Email, published on 9 Apr 2021. 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

Using predictable index for attachments in Samsung Email prior to version 6.1.41.0 allows remote attackers to get attachments of another emails when users open the malicious attachment.

Weakness: CWE-330 (Use of Insufficiently Random Values), CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2021-25375?

It affects 1 product.


Products: Samsung Email.

## How do I fix CVE-2021-25375?

No fix has been published for CVE-2021-25375 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-25375 being exploited?

There is no known exploitation of CVE-2021-25375 in the wild and no public exploit code.

## Other vulnerabilities in Samsung Email

- [CVE-2023-30729](https://insights.sbomify.com/CVE-2023-30729/): Weak cryptography in Samsung Email (high 8.1)
- [CVE-2024-20867](https://insights.sbomify.com/CVE-2024-20867/): Information disclosure in Samsung Email (medium 5.5)
- [CVE-2025-20894](https://insights.sbomify.com/CVE-2025-20894/): Missing authorization in Samsung Email (medium 4.6)
- [CVE-2024-34636](https://insights.sbomify.com/CVE-2024-34636/): Information disclosure in Samsung Email (medium 4.0)
- [CVE-2023-42553](https://insights.sbomify.com/CVE-2023-42553/): Missing authorization in Samsung Email (medium 4.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-25375 and fix it if it is affected.

What it is: CVE-2021-25375 is a medium-severity vulnerability in Samsung Email, published on 9 Apr 2021. 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-2021-25375 in the wild and no public exploit code.

Affected product: Samsung Email. 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-2021-25375/ (Markdown: https://insights.sbomify.com/CVE-2021-25375/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-25375
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-25375
- OSV: https://osv.dev/vulnerability/CVE-2021-25375

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-25375/
Summaries are generated and may contain mistakes; the official description above is the record.