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Fencer Vulns
low 3.7

CVE-2025-71264 json

Mumble before 1.6.870 is prone to an out-of-bounds array access, which may result in denial of service (client crash).

published 2026-03-16 7 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-208685

cvss
3.7
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 22%
public exploits
0
none known

Summary

Mumble before 1.6.870 is prone to an out-of-bounds array access, which may result in denial of service (client crash).

Patch / fix

  • Mumble Mumble 1.6.870
  • mumble Debian 13 1.5.735-5+deb13u1
  • mumble Debian 14 1.5.735-7

debian advisories DEBIAN-CVE-2025-71264

  • mumble openSUSE Leap 16.0 1.5.857-bp160.1.1
  • mumble openSUSE Tumbleweed 1.5.857-2.1

opensuse advisories openSUSE-SU-2026:20394-1openSUSE-SU-2026:10388-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-71264 updated cvss 3.7

mumble: Mumble out of bound array access

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
7 mo ago

Exploit prediction

0.29% chance of exploitation in the next 30 days, higher than 22% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
NVD 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected products

  • Mumble Mumble

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.