CVE-2025-71264 Memory corruption in Mumble
An out-of-bounds array access in Mumble allows attackers to cause a client crash, resulting in denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-71264?
CVE-2025-71264 is a low-severity memory corruption vulnerability in Mumble, published on 16 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Mumble before 1.6.870 is prone to an out-of-bounds array access, which may result in denial of service (client crash).
Weakness: CWE-125
Which versions are affected by CVE-2025-71264?
It affects 1 product.
Linux distribution packages (2)
mumble openSUSE:Leap 16.0 | All versions | 1.5.857-bp160.1.1 |
mumble openSUSE:Tumbleweed | All versions | 1.5.857-2.1 |
Products include Mumble Mumble.
How do I fix CVE-2025-71264?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-71264 being exploited?
There is no known exploitation of CVE-2025-71264 in the wild and no public exploit code.
Other vulnerabilities in Mumble
Sources
Also known as DEBIAN-CVE-2025-71264, GHSA-r4p8-phpj-5pvw, MGASA-2026-0228, UBUNTU-CVE-2025-71264, openSUSE-SU-2026:10388-1, openSUSE-SU-2026:20394-1.