CVE-2018-16866

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• 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

1.05% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 64.1% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

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

2019-01-11 19:00Z7 YR AGO

Last updated

2025-06-09 15:41Z1 YR AGO

Reserved

2018-09-11

Assigning CNA

redhat

Record state

PUBLISHED

Severity

Medium (CVSS 4.3)

CNA CVSS vector

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

Weaknesses

• CWE-125Out-of-bounds ReadBase
• CWE-200Exposure of Sensitive Information to an Unauthorized ActorClass

Data version

5.1

Document digest

35f3f851f45f310eb615f2ab66e0e71a8601586ffe40b9206bc2077070c9f39d

• www.debian.orgDSA-4367https://www.debian.org/security/2019/dsa-4367vendor-advisoryx_refsource_DEBIAN
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20190117-0001/x_refsource_CONFIRM
• www.qualys.comhttps://www.qualys.com/2019/01/09/system-down/system-down.txtx_refsource_MISC
• bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16866x_refsource_CONFIRM
• usn.ubuntu.comUSN-3855-1https://usn.ubuntu.com/3855-1/vendor-advisoryx_refsource_UBUNTU
• www.securityfocus.com106527http://www.securityfocus.com/bid/106527vdb-entryx_refsource_BID
• security.gentoo.orgGLSA-201903-07https://security.gentoo.org/glsa/201903-07vendor-advisoryx_refsource_GENTOO
• www.openwall.com[oss-security] 20190510 Re: System Down: A systemd-journald exploithttp://www.openwall.com/lists/oss-security/2019/05/10/4mailing-listx_refsource_MLIST
• seclists.org20190513 Re: System Down: A systemd-journald exploithttps://seclists.org/bugtraq/2019/May/25mailing-listx_refsource_BUGTRAQ
• packetstormsecurity.comhttp://packetstormsecurity.com/files/152841/System-Down-A-systemd-journald-Exploit.htmlx_refsource_MISC
• seclists.org20190513 Re: System Down: A systemd-journald exploithttp://seclists.org/fulldisclosure/2019/May/21mailing-listx_refsource_FULLDISC
• access.redhat.comRHSA-2019:2091https://access.redhat.com/errata/RHSA-2019:2091vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2019:3222https://access.redhat.com/errata/RHSA-2019:3222vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2020:0593https://access.redhat.com/errata/RHSA-2020:0593vendor-advisoryx_refsource_REDHAT