---
title: CVE-2024-49195
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-2024-49195
---

# CVE-2024-49195

Publication date 15 October 2024

Last updated 9 October 2025

---

Ubuntu priority

**Medium**

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

## Cvss 3 Severity Score

**9.8 · Critical**

[Score breakdown](https://ubuntu.com/security/CVE-2024-49195#impact-score)

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## Description

Mbed TLS 3.5.x through 3.6.x before 3.6.2 has a buffer underrun in pkwrite
when writing an opaque key pair

[Read the notes from the security team](https://ubuntu.com/security/CVE-2024-49195#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| mbedtls | 25.10 questing | Not affected |
| 25.04 plucky | Not affected |
| 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 |
| 16.04 LTS xenial | 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)
* [Patch details](https://ubuntu.com/security/CVE-2024-49195#patch-details)

## Notes

---

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

Only affects versions 3.5.0 to 3.6.1

### Patch details

For informational purposes only. We recommend not to cherry-pick updates. [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)

| Package | Patch details |
| --- | --- |
| mbedtls | * Upstream:   [5f1c8a7](https://github.com/Mbed-TLS/mbedtls/commit/5f1c8a720fdcc62cb9854da7b3a64a7708f5f88c) |

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

9.8 · Critical

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | Low |
  | Privileges required | None |
  | User interaction | None |
  | Scope | Unchanged |
  | Confidentiality impact | High |
  | Integrity impact | High |
  | Availability impact | High |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 9.8 · Critical |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-49195)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2024-49195)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2024-49195)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2024-49195)

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2024-49195>
* <https://mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-advisory-2024-10-1/>
* <https://mbed-tls.readthedocs.io/en/latest/tech-updates/security-advisories/>