Medium severity · published Mar 16, 2026
CVE-2025-71264
Mumble before 1.6.870 is prone to an out-of-bounds array access, which may result in denial of service (client crash)
5.3
CVSS
0.3%
EPSS
No
On KEV
Description
Mumble before 1.6.870 is prone to an out-of-bounds array access, which may result in denial of service (client crash).
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 21% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MU
Mumble · Mumble
before 1.6.870 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-71264
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-71264
Mailing List
https://bugs.debian.org/1129178
Patch
https://github.com/mumble-voip/mumble/commit/ff2a2332cccb267721553f09c0ded4de880622e0
Issue Tracking
https://github.com/mumble-voip/mumble/pull/7032
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