HIGHVulnerability
CVE-2026-89147
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.
Properties
- severity
- HIGH
- score
- 7.5
- cve_id
- CVE-2026-89147
- signal_observed_at
- 2026-09-21T23:07:07+00:00
- vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- published_at
- 2026-09-11T11:16:58.040
- last_modified
- 2026-09-15T17:17:33.660
Related Entities (3)
HAS_WEAKNESS (2)
→[Weakness]Uncontrolled Resource Consumption
→[Weakness]
DESCRIBED_BY (1)
→[Source]NVD
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