CVE-2018-18066

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

3.59% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 88.9% of scored records. A rank, not a probability.

NVD base score

7.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2018-10-08 18:00Z8 YR AGO

Last updated

2025-05-06 14:41Z1 YR AGO

Reserved

2018-10-08

Assigning CNA

mitre

Record state

PUBLISHED

Severity

High (CVSS 7.5)

CNA CVSS vector

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

Weaknesses

• CWE-476NULL Pointer DereferenceBase

Data version

5.1

Document digest

240ef04194fe46c2e42f0bf38de15ba21c75abaf035bc5389707319856126cb5

• sourceforge.nethttps://sourceforge.net/p/net-snmp/code/ci/7ffb8e25a0db851953155de91f0170e9bf8c457d/x_refsource_MISC
• dumpco.rehttps://dumpco.re/blog/net-snmp-5.7.3-remote-dosx_refsource_MISC
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20181107-0001/x_refsource_CONFIRM
• sourceforge.nethttps://sourceforge.net/p/net-snmp/code/ci/f23bcd3ac6ddee5d0a48f9703007ccc738914791/x_refsource_MISC
• www.oracle.comhttps://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.htmlx_refsource_MISC