# CVE-2025-55297: ESF-IDF BluFi Example Memory Overflow Vulnerability

> Memory overflows in the BluFi example allow attackers to execute arbitrary code or cause denial of service on Espressif IoT devices.

- **Severity:** Medium 5.2 (`CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U`)
- **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:** 21 Aug 2025
- **Updated:** 22 Aug 2025
- **Also known as:** GHSA-9w88-r2vm-qfc4

## What is CVE-2025-55297?

CVE-2025-55297 is a medium-severity memory corruption vulnerability in espressif esp-idf, published on 21 Aug 2025. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. The BluFi example bundled in ESP-IDF was vulnerable to memory overflows in two areas: Wi-Fi credential handling and Diffie–Hellman key exchange. This vulnerability is fixed in 5.4.1, 5.3.3, 5.1.6, and 5.0.9.

Weakness: CWE-131 (Incorrect Calculation of Buffer Size), CWE-120 (Buffer Copy without Checking Size of Input)

## Which versions are affected by CVE-2025-55297?

It affects 1 product.


Products: Espressif Esp-Idf.

## How do I fix CVE-2025-55297?

No fix has been published for CVE-2025-55297 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-55297 being exploited?

There is no known exploitation of CVE-2025-55297 in the wild and no public exploit code.

## Other vulnerabilities in espressif esp-idf

- [CVE-2026-45328](https://insights.sbomify.com/CVE-2026-45328/): ESF-IDF: Out-of-Bounds Write in ESP-TEE Secure Service Wrappers (critical 9.3)
- [CVE-2024-53406](https://insights.sbomify.com/CVE-2024-53406/): Auth bypass in n/a (high 8.8)
- [CVE-2021-28139](https://insights.sbomify.com/CVE-2021-28139/): Memory corruption in n/a (high 8.8)
- [CVE-2024-33453](https://insights.sbomify.com/CVE-2024-33453/): Information disclosure in n/a (high 8.1)
- [CVE-2019-12587](https://insights.sbomify.com/CVE-2019-12587/): Weak cryptography in n/a (high 8.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-55297 and fix it if it is affected.

What it is: CVE-2025-55297 is a medium-severity memory corruption vulnerability in espressif esp-idf, published on 21 Aug 2025. 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-2025-55297 in the wild and no public exploit code.

Affected product: espressif esp-idf. 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-2025-55297/ (Markdown: https://insights.sbomify.com/CVE-2025-55297/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-55297
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-55297
- OSV: https://osv.dev/vulnerability/CVE-2025-55297

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-55297/
Summaries are generated and may contain mistakes; the official description above is the record.