# CVE-2024-52878: Memory corruption in n/a

> A buffer over-read in the InsydeH2O UEFI firmware VariableRuntimeDxe driver allows attackers to potentially read sensitive memory or cause system instability.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/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:** Not needed
- **Fix available:** No
- **Published:** 15 May 2025
- **Updated:** 19 May 2025
- **Also known as:** GHSA-qc53-6pcv-3q2p

## What is CVE-2024-52878?

CVE-2024-52878 is a high-severity memory corruption vulnerability in Insyde Insydeh2o, published on 15 May 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An issue was discovered in Insyde InsydeH2O kernel 5.2 before version 05.29.50, kernel 5.3 before version 05.38.50, kernel 5.4 before version 05.46.50, kernel 5.5 before version 05.54.50, kernel 5.6 before version 05.61.50, and kernel 5.7 before version 05.70.50. In VariableRuntimeDxe driver, VariableServicesSetVariable () can be called by gRT_>SetVariable () or the SmmSetSensitiveVariable () or SmmInternalSetVariable () from SMM. In VariableServicesSetVariable (), it uses StrSize () to get variable name size, uses StrLen () to get variable name length and uses StrCmp () to compare strings. These actions may cause a buffer over-read.

Weakness: CWE-126 (Buffer Over-read)

## Which versions are affected by CVE-2024-52878?

It affects 1 product.


Products: Insyde Insydeh2o.

## How do I fix CVE-2024-52878?

No fix has been published for CVE-2024-52878 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-52878 being exploited?

There is no known exploitation of CVE-2024-52878 in the wild and no public exploit code.

## Other vulnerabilities in Insyde Insydeh2o

- [CVE-2021-41842](https://insights.sbomify.com/CVE-2021-41842/): Missing authorization in n/a (critical 9.8)
- [CVE-2023-22612](https://insights.sbomify.com/CVE-2023-22612/): Memory corruption in n/a (high 8.8)
- [CVE-2023-22613](https://insights.sbomify.com/CVE-2023-22613/): Memory corruption in n/a (high 8.8)
- [CVE-2023-22614](https://insights.sbomify.com/CVE-2023-22614/): Memory corruption in n/a (high 8.8)
- [CVE-2023-22615](https://insights.sbomify.com/CVE-2023-22615/): Memory corruption in n/a (high 8.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-52878 and fix it if it is affected.

What it is: CVE-2024-52878 is a high-severity memory corruption vulnerability in Insyde Insydeh2o, published on 15 May 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-52878 in the wild and no public exploit code.

Affected product: Insyde Insydeh2o. 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-2024-52878/ (Markdown: https://insights.sbomify.com/CVE-2024-52878/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-52878
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-52878
- OSV: https://osv.dev/vulnerability/CVE-2024-52878

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-52878/
Summaries are generated and may contain mistakes; the official description above is the record.