CVE-2018-20549

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

1.83% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 76.9% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

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

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

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

2018-12-28 03:00Z7 YR AGO

Last updated

2024-08-05 12:05Z2 YR AGO

Reserved

2018-12-27

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferClass

Data version

5.1

Document digest

94bbd20b2919360b50db65d3cd5d4b62041670896a68e5e5e72d2fc272fb0e49

• usn.ubuntu.comUSN-3860-2https://usn.ubuntu.com/3860-2/vendor-advisoryx_refsource_UBUNTU
• lists.debian.org[debian-lts-announce] 20190109 [SECURITY] [DLA 1631-1] libcaca security updatehttps://lists.debian.org/debian-lts-announce/2019/01/msg00007.htmlmailing-listx_refsource_MLIST
• bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1652628x_refsource_MISC
• usn.ubuntu.comUSN-3860-1https://usn.ubuntu.com/3860-1/vendor-advisoryx_refsource_UBUNTU
• lists.opensuse.orgopenSUSE-SU-2019:1144http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00033.htmlvendor-advisoryx_refsource_SUSE
• lists.fedoraproject.orgFEDORA-2022-fc6b53e7a2https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6WFGYICNTMNDNMDDUV4G2RYFB5HNJCOV/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2022-e3b9986722https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PC7EGOEQ5C4OD66ZUJJIIYEXBTZOCMZX/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2022-3d291845d8https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZSBCRN6EGQJUVOSD4OEEQ6XORHEM2CUL/vendor-advisoryx_refsource_FEDORA