---
title: "CVE-2025-6547\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2025-6547?format=md
keywords: index, follow
---

# CVE-2025-6547

Publication date 23 June 2025

Last updated 19 June 2026

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

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## Description

Improper Input Validation vulnerability in pbkdf2 allows Signature Spoofing
by Improper Validation.This issue affects pbkdf2: <=3.1.2.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2025-6547?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| node-pbkdf2 | 26.04 LTS resolute | Not affected |
| 25.10 questing | Not affected |
| 25.04 plucky | Ignored end of life, was needs-triage |
| 24.10 oracular | Ignored end of life, was needs-triage |
| 24.04 LTS noble | Not affected |
| 22.04 LTS jammy | Not affected |
| 20.04 LTS focal | Not affected |
| 18.04 LTS bionic | Not affected |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Notes

---

### [mrmajumder](https://launchpad.net/~mrmajumder)

Only issue with historic Node.js versions <3.0.0, therefore
bionic and above releases are not affected, since they contain
Node.js versions >= 8.10.0.

## Severity score breakdown

CVSS version:
CVSS v4.0

**Base score**

9.1 · Critical

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | High |
  | Attack requirements | Present |
  | Privileges required | None |
  | User interaction | None |
  | Vulnerable system - Confidentiality impact | None |
  | Vulnerable system - Integrity impact | High |
  | Vulnerable system - Availability impact | None |
  | Subsequent system - Confidentiality impact | High |
  | Subsequent system - Integrity impact | High |
  | Subsequent system - Availability impact | High |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 9.1 · Critical |
  | Base + Threat score | - |
  | Base + Environmental score | - |
  | Base + Threat + Environmental score | - |

**Vector:** CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:H/SI:H/SA:H

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-6547)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2025-6547)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2025-6547)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2025-6547)

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2025-6547>
* <https://github.com/browserify/pbkdf2/security/advisories/GHSA-v62p-rq8g-8h59>
* <https://github.com/browserify/pbkdf2/commit/e3102a8cd4830a3ac85cd0dd011cc002fdde33bb>