# CVE-2020-26200: Security feature bypass in Kaspersky Endpoint Security with the Full Disk Encryption component installed

> Attackers with physical or admin access can bypass UEFI Secure Boot by loading untrusted modules via Kaspersky's boot loader.

- **Severity:** Medium 6.8 (`CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **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:** 26 Feb 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-xm85-53qc-rpxj

## What is CVE-2020-26200?

CVE-2020-26200 is a medium-severity vulnerability in Kaspersky Endpoint Security with the Full Disk Encryption component installed, published on 26 Feb 2021. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A component of Kaspersky custom boot loader allowed loading of untrusted UEFI modules due to insufficient check of their authenticity. This component is incorporated in Kaspersky Rescue Disk (KRD) and was trusted by the Authentication Agent of Full Disk Encryption in Kaspersky Endpoint Security (KES). This issue allowed to bypass the UEFI Secure Boot security feature. An attacker would need physical access to the computer to exploit it. Otherwise, local administrator privileges would be required to modify the boot loader component.

Weakness: CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2020-26200?

It affects 2 products.


Products: Kaspersky Endpoint Security, Kaspersky Rescue Disk.

## How do I fix CVE-2020-26200?

No fix has been published for CVE-2020-26200 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-26200 being exploited?

There is no known exploitation of CVE-2020-26200 in the wild and no public exploit code.

## Other vulnerabilities in Kaspersky Endpoint Security with the Full Disk Encryption component installed

- [CVE-2021-35053](https://insights.sbomify.com/CVE-2021-35053/): Denial of service in Kaspersky Endpoint Security for Windows (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-26200 and fix it if it is affected.

What it is: CVE-2020-26200 is a medium-severity vulnerability in Kaspersky Endpoint Security with the Full Disk Encryption component installed, published on 26 Feb 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-2020-26200 in the wild and no public exploit code.

Affected product: Kaspersky Endpoint Security with the Full Disk Encryption component installed. 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-2020-26200/ (Markdown: https://insights.sbomify.com/CVE-2020-26200/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-26200
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-26200
- OSV: https://osv.dev/vulnerability/CVE-2020-26200

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-26200/
Summaries are generated and may contain mistakes; the official description above is the record.