CVE-2018-18066
CVSS v3
7.5
HIGH
EPSS Score
3.6 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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.
Technical details
- Published
- 2018-10-08
Frequently asked questions
What is CVE-2018-18066?
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.
Is CVE-2018-18066 actively exploited?
Active exploitation of CVE-2018-18066 has not been confirmed. Its EPSS score was 3.6% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2018-18066?
CVE-2018-18066 has a CVSS v3 base score of 7.5 (HIGH severity).
Is CVE-2018-18066 affecting your environment?
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