# CVE-2025-53779: Windows Kerberos Elevation of Privilege Vulnerability

> An authorized attacker can elevate privileges via relative path traversal in Windows Kerberos over the network.

- **Severity:** High 7.2 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 12 Aug 2025
- **Updated:** 26 Feb 2026
- **Also known as:** GHSA-93cj-3754-25wf

## What is CVE-2025-53779?

CVE-2025-53779 is a high-severity path traversal vulnerability in Microsoft Windows Server 2025, published on 12 Aug 2025. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

Relative path traversal in Windows Kerberos allows an authorized attacker to elevate privileges over a network.

Weakness: CWE-23 (Relative Path Traversal)

## Which versions are affected by CVE-2025-53779?

It affects 1 product.


Products: Microsoft Windows Server 2025.

## How do I fix CVE-2025-53779?

No fix has been published for CVE-2025-53779 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-53779 being exploited?

There is no known exploitation of CVE-2025-53779 in the wild and no public exploit code.

Public exploit code:

- PowerShell Script to automatically abuse the BadSuccessor vulnerability (CVE-2025-53779) (github_poc): https://github.com/b5null/Invoke-BadSuccessor.ps1
- A TryHackme room covering the CVE-2025-53779 exploitation using windows (github_poc): https://github.com/Musa-xvi/Active-Directory-BadSuccessor
- Reproduction of cve-2025-53779-kerberos_bypass_reproduction (github_poc): https://github.com/razureink/cve-2025-53779-kerberos_bypass_reproduction

## Other vulnerabilities in Microsoft Windows Server 2025

- [CVE-2026-69765](https://insights.sbomify.com/CVE-2026-69765/): Windows Storport Miniport Driver Remote Code Execution Vulnerability (high 8.8)
- [CVE-2026-49169](https://insights.sbomify.com/CVE-2026-49169/): Windows DNS Server Remote Code Execution Vulnerability (high 8.0)
- [CVE-2026-34332](https://insights.sbomify.com/CVE-2026-34332/): Windows Kernel-Mode Driver Remote Code Execution Vulnerability (high 8.0)
- [CVE-2026-72928](https://insights.sbomify.com/CVE-2026-72928/): Windows DNS Server Remote Code Execution Vulnerability (high 7.5)
- [CVE-2026-20830](https://insights.sbomify.com/CVE-2026-20830/): Capability Access Management Service (camsvc) Elevation of Privilege Vulnerability (high 7.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-53779 and fix it if it is affected.

What it is: CVE-2025-53779 is a high-severity path traversal vulnerability in Microsoft Windows Server 2025, published on 12 Aug 2025. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-53779 in the wild and no public exploit code.

Affected product: Microsoft Windows Server 2025. 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-2025-53779/ (Markdown: https://insights.sbomify.com/CVE-2025-53779/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-53779
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-53779
- OSV: https://osv.dev/vulnerability/CVE-2025-53779

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From sbomify Insights: https://insights.sbomify.com/CVE-2025-53779/
Summaries are generated and may contain mistakes; the official description above is the record.