Vulnerability record · CVE-2018-18066 · published 8 October 2018

CVE-2018-18066: Net-snmp null pointer dereference vulnerability

Net Snmp · Net Snmp

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.

7.5 CVSS 3.1 High EPSS 3.6% · top 11.0% CWE-476 · NULL pointer dereference

7.5CVSS 3.1 base score, v2 5.0

3.6%EPSS exploitation probability, 30 days

NoNot in CISA KEV

7Affected product versions listed by NVD

10References, 2 tagged exploit

17 Jun 2026Last modified by NVD

Description

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

7 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Net Snmp Net Snmp NCloud Backup Netapp NData Ontap Netapp NE Series Santricity Os Controller Netapp NHyper Converged Infrastructure Netapp NSolidfire Element Os Netapp NStoragegrid Webscale Netapp

References

Link	Tags
https://dumpco.re/blog/net-snmp-5.7.3-remote-dos	ExploitPatchThird Party Advisory
https://security.netapp.com/advisory/ntap-20181107-0001/	Third Party Advisory
https://sourceforge.net/p/net-snmp/code/ci/7ffb8e25a0db851953155de91f0170e9bf8c457d/	PatchThird Party Advisory
https://sourceforge.net/p/net-snmp/code/ci/f23bcd3ac6ddee5d0a48f9703007ccc738914791/	PatchThird Party Advisory
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
https://dumpco.re/blog/net-snmp-5.7.3-remote-dos	ExploitPatchThird Party Advisory
https://security.netapp.com/advisory/ntap-20181107-0001/	Third Party Advisory
https://sourceforge.net/p/net-snmp/code/ci/7ffb8e25a0db851953155de91f0170e9bf8c457d/	PatchThird Party Advisory
https://sourceforge.net/p/net-snmp/code/ci/f23bcd3ac6ddee5d0a48f9703007ccc738914791/	PatchThird Party Advisory
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html

Track CVE-2018-18066 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2021-42013Apache HTTP Server path traversal and RCE via incomplete fixThe fix for CVE-2021-41773 in Apache HTTP Server 2.4.50 was insufficient, leaving a path traversal flaw that lets attackers map URLs to files outside…KEVEPSS 100%analysed7 Oct 2021 9.8CVE-2021-41773Apache HTTP Server 2.4.49 path traversal and RCEA path normalization flaw introduced in Apache HTTP Server 2.4.49 lets attackers map URLs to files outside directories configured by Alias-like direc…KEVEPSS 100%analysed5 Oct 2021 9.0CVE-2021-40438Apache HTTP Server mod_proxy SSRF via crafted URI pathA crafted request URI path can make mod_proxy forward the request to an origin server chosen by the remote user, an SSRF flaw in Apache HTTP Server 2…KEVEPSS 100%analysed16 Sep 2021 7.8CVE-2021-22555Linux kernel netfilter x_tables heap out-of-bounds writeA heap out-of-bounds write exists in the Linux kernel netfilter x_tables code (net/netfilter/x_tables.c), present since v2.6.19-rc1. A local attacker…KEVEPSS 79%analysed7 Jul 2021 7.8CVE-2021-3156Sudo off-by-one heap overflow allows root privilege escalationSudo before 1.9.5p2 contains an off-by-one error leading to a heap-based buffer overflow. Triggering it via 'sudoedit -s' with a command-line argumen…KEVEPSS 100%analysed26 Jan 2021 7.8CVE-2019-2215Android Binder use-after-free allows kernel privilege escalationCVE-2019-2215 is a use-after-free in binder.c in the Android/Linux kernel that lets a local application escalate privileges to the kernel. It matters…KEVEPSS 72%analysed11 Oct 2019 7.8CVE-2019-13272Linux kernel ptrace credential mishandling allows local root escalationThe Linux kernel before 5.1.17 mishandles credential recording in ptrace_link (kernel/ptrace.c) when a process creates a ptrace relationship, and als…KEVEPSS 52%analysed17 Jul 2019 7.0CVE-2016-5195Linux Kernel Dirty COW Race Condition Privilege EscalationA race condition in the Linux kernel's mm/gup.c mishandles copy-on-write, letting a local user write to read-only memory mappings. This breaks the re…KEVEPSS 84%analysed10 Nov 2016

Source: NIST National Vulnerability Database (record CVE-2018-18066), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.