High severity · published Jan 25, 2019
CVE-2018-20743
murmur in Mumble through 1.2.19 before 2018-08-31 mishandles multiple concurrent requests that are persisted in the database, which allows remote attackers to cause a denial of…
7.5
CVSS
3.6%
EPSS
No
On KEV
Description
murmur in Mumble through 1.2.19 before 2018-08-31 mishandles multiple concurrent requests that are persisted in the database, which allows remote attackers to cause a denial of service (daemon hang or crash) via a message flood.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.6% · higher than 89% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
8.0; 9.0 · source: NVD
MU
Mumble · Mumble
through 1.2.19 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-20743
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-20743
lists.opensuse.org
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00045.html
lists.opensuse.org
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00023.html
lists.opensuse.org
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00058.html
Issue Tracking
https://bugs.debian.org/919249
Patch
https://github.com/mumble-voip/mumble/issues/3505
Patch
https://github.com/mumble-voip/mumble/pull/3510
More from Debian Linux
10.0
CVE-2025-32433
Erlang/OTP SSH Vulnerable to Pre-Authentication RCE
10.0
CVE-2025-24201
Apple Multiple Products WebKit Out-of-Bounds Write Vulnerability
10.0
CVE-2021-44228
Apache Log4j2 JNDI features do not protect against attacker controlled LDAP and other JNDI related endpoints
10.0
CVE-2015-3306
ProFTPD Improper Access Control Vulnerability
9.8
CVE-2026-111497
Out-of-Bounds Write in Google Brotli Decoder