PT-2026-89827
CVE-2026-89147
·
Published
2026-09-11
·
Updated
2026-11-04
Description by
CVSS 4.0
8.7
HighMetricsAV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Name of the Vulnerable Software and Affected Versions
Net-SNMP versions prior to 5.9.5.3
Description
The SMUX module contains a flaw where the
smux accept() function performs an unauthenticated blocking read without a timeout on newly accepted connections. A remote unauthenticated client can connect to the SMUX listener and send no data, which causes the single-threaded snmpd main loop to block indefinitely and suspend all SNMP processing, resulting in a denial of service.Recommendations
Update Net-SNMP to version 5.9.5.3 or later.
Exploitability
Exploit
Fix
Impacts
Vendors
Affected products
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