---
title: "CVE-2026-34501\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-2026-34501?format=md
keywords: index, follow
---

# CVE-2026-34501

Publication date 6 August 2026

Last updated 3 September 2026

---

Ubuntu priority

**Medium**

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

## Cvss 3 Severity Score

**7.5 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2026-34501?format=md#impact-score)

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## Description

Heap-based Buffer Overflow vulnerability in Apache Portable Runtime Utility
redis client.
This issue affects Apache Portable Runtime Utility: from 1.6.0 through
1.6.3.
Users are recommended to upgrade to version 1.6.4, which fixes the issue.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| apr-util | 26.04 LTS resolute | Fixed 1.6.3-3ubuntu3.1 |
| 24.04 LTS noble | Fixed 1.6.3-1.1ubuntu7.1 |
| 22.04 LTS jammy | Fixed 1.6.1-5ubuntu4.22.04.3 |
| 20.04 LTS focal | Fixed 1.6.1-4ubuntu2.2+esm1  Ubuntu Pro |
| 18.04 LTS bionic | Fixed 1.6.1-2ubuntu0.1+esm1  Ubuntu Pro |
| 16.04 LTS xenial | Fixed 1.5.4-1ubuntu0.1~esm1  Ubuntu Pro |
| 14.04 LTS trusty | Fixed 1.5.3-1ubuntu0.1~esm3  Ubuntu Pro |

---

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

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## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

7.5 · High

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 7.5 · High |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-34501)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2026-34501)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2026-34501)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2026-34501)

### Related Ubuntu Security Notices (USN)

+ [USN-8719-1](https://usn.ubuntu.com/USN-8719-1)
+ APR-util vulnerabilities
+ 3 September 2026

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2026-34501>
* <https://lists.apache.org/thread/o8h6c7cq86fplxlnry6c3rn9x0ovq8mv>
* <http://www.openwall.com/lists/oss-security/2026/08/06/11>