# CVE-2025-35968: Security feature bypass in Slim Bootloader

> A protection mechanism failure in Slim Bootloader UEFI firmware allows local attackers to escalate privileges via complex startup code manipulation.

- **Severity:** High 7.1 (`CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 11 Nov 2025
- **Updated:** 14 Nov 2025
- **Also known as:** GHSA-7fh7-6653-rp96

## What is CVE-2025-35968?

CVE-2025-35968 is a high-severity vulnerability in Slim Bootloader, published on 11 Nov 2025. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Protection mechanism failure in the UEFI firmware for the Slim Bootloader within firmware may allow an escalation of privilege. Startup code and smm adversary with a privileged user combined with a high complexity attack may enable escalation of privilege. This result may potentially occur via local access when attack requirements are present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (high), integrity (high) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.

Weakness: CWE-693 (Protection Mechanism Failure)

## Which versions are affected by CVE-2025-35968?


## How do I fix CVE-2025-35968?

No fix has been published for CVE-2025-35968 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-35968 being exploited?

There is no known exploitation of CVE-2025-35968 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-35968 and fix it if it is affected.

What it is: CVE-2025-35968 is a high-severity vulnerability in Slim Bootloader, published on 11 Nov 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-2025-35968 in the wild and no public exploit code.

Affected product: Slim Bootloader. 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-2025-35968/ (Markdown: https://insights.sbomify.com/CVE-2025-35968/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-35968
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-35968
- OSV: https://osv.dev/vulnerability/CVE-2025-35968

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-35968/
Summaries are generated and may contain mistakes; the official description above is the record.