DEBIAN-CVE-2026-89147

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Source
https://security-tracker.debian.org/tracker/CVE-2026-89147
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-89147.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-89147
Upstream
Published
2026-09-11T11:16:58Z
Modified
2026-09-12T05:00:13Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

Net-SNMP through 5.9.5.2 contains a denial of service vulnerability in the SMUX module where smux_accept() performs an unauthenticated blocking read without timeout on newly accepted connections. An unauthenticated remote client can connect to the SMUX listener and send no data, causing the single-threaded snmpd main loop to block indefinitely and suspend all SNMP processing.

References

Affected packages

Debian:12 / net-snmp

Package

Name
net-snmp
Purl
pkg:deb/debian/net-snmp?arch=source&distro=bookworm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

5.*
5.9.3+dfsg-2
5.9.3+dfsg-2+deb12u1
5.9.4+dfsg-1
5.9.4+dfsg-1.1~exp1
5.9.4+dfsg-1.1~exp2
5.9.4+dfsg-1.1
5.9.4+dfsg-2
5.9.5.2+dfsg-1
5.9.5.2+dfsg-2
5.9.5.2+dfsg-2.1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-89147.json"

Debian:13 / net-snmp

Package

Name
net-snmp
Purl
pkg:deb/debian/net-snmp?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

5.*
5.9.4+dfsg-2
5.9.4+dfsg-2+deb13u1
5.9.5.2+dfsg-1
5.9.5.2+dfsg-2
5.9.5.2+dfsg-2.1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-89147.json"

Debian:14 / net-snmp

Package

Name
net-snmp
Purl
pkg:deb/debian/net-snmp?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

5.*
5.9.4+dfsg-2
5.9.5.2+dfsg-1
5.9.5.2+dfsg-2
5.9.5.2+dfsg-2.1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-89147.json"