CVE-2018-18065
_set_key in agent/helpers/table_container.c in Net-SNMP before 5.8 has a NULL Pointer Exception bug that can be used by an authenticated attacker to remotely cause the instance to crash via a crafted UDP packet, resulting in Denial of Service.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 17.5%, higher than 97% of all known CVEs. Patch or mitigate before the next change window.
Description
_set_key in agent/helpers/table_container.c in Net-SNMP before 5.8 has a NULL Pointer Exception bug that can be used by an authenticated attacker to remotely cause the instance to crash via a crafted UDP packet, resulting in Denial of Service.
- CVSS 3.0
- 6.5 MEDIUMCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 17.50% probability · 97th percentile
- Public exploits
- 1 in Exploit-DB · first 8 October 2018
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- net-snmp/net-snmp · debian/debian linux · canonical/ubuntu linux · netapp/cloud backup · netapp/hyper converged infrastructure · netapp/storagegrid webscale · netapp/data ontap · netapp/e-series santricity os controller · netapp/solidfire element os · paloaltonetworks/pan-os
- Source
- cve@mitre.org
EPSS moved from 13.7% on 21 September 2026 to 17.5% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://www.securityfocus.com/bid/106265Third Party Advisory, VDB Entry
- https://cert-portal.siemens.com/productcert/pdf/ssa-978220.pdf
- https://dumpco.re/blog/net-snmp-5.7.3-remote-dosExploit, Patch, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20181107-0001/Third Party Advisory
- https://security.paloaltonetworks.com/CVE-2018-18065
- https://sourceforge.net/p/net-snmp/code/ci/7ffb8e25a0db851953155de91f0170e9bf8c457d/Patch, Third Party Advisory
- https://usn.ubuntu.com/3792-1/Third Party Advisory
- https://usn.ubuntu.com/3792-2/Third Party Advisory
- https://usn.ubuntu.com/3792-3/Third Party Advisory
- https://www.debian.org/security/2018/dsa-4314Third Party Advisory
- https://www.exploit-db.com/exploits/45547/Exploit, Patch, Third Party Advisory, VDB Entry
- https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
- http://www.securityfocus.com/bid/106265Third Party Advisory, VDB Entry
- https://cert-portal.siemens.com/productcert/pdf/ssa-978220.pdf
- https://dumpco.re/blog/net-snmp-5.7.3-remote-dosExploit, Patch, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20181107-0001/Third Party Advisory
- https://security.paloaltonetworks.com/CVE-2018-18065
- https://sourceforge.net/p/net-snmp/code/ci/7ffb8e25a0db851953155de91f0170e9bf8c457d/Patch, Third Party Advisory
- https://usn.ubuntu.com/3792-1/Third Party Advisory
- https://usn.ubuntu.com/3792-2/Third Party Advisory
- https://usn.ubuntu.com/3792-3/Third Party Advisory
- https://www.debian.org/security/2018/dsa-4314Third Party Advisory
- https://www.exploit-db.com/exploits/45547/Exploit, Patch, Third Party Advisory, VDB Entry
- https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.