CVE-2018-18066

high

Published — · Modified —

CVSS v3

—

CVSS v2

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VIR risk

8.0

Description

snmp_oid_compare in snmplib/snmp_api.c in Net-SNMP before 5.8 has a NULL Pointer Exception bug that can be used by an unauthenticated attacker to remotely cause the instance to crash via a crafted UDP packet, resulting in Denial of Service.

Predictions

Exploit likelihood

20%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2018-18066

OS impact

OS	Version	Status	Fixed in
arch		fixed	`5.8-1`
debian	bookworm	fixed	`5.7.3+dfsg-1.1`
debian	bullseye	fixed	`5.7.3+dfsg-1.1`
debian	forky	fixed	`5.7.3+dfsg-1.1`
debian	sid	fixed	`5.7.3+dfsg-1.1`
debian	trixie	fixed	`5.7.3+dfsg-1.1`

References

https://security-tracker.debian.org/tracker/CVE-2018-18066

Verify integrity in audit chain (admin only). AS-IS.