CVE-2018-17540

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

3.51% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 88.4% 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

Low. 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

2018-10-03 20:00Z7 YR AGO

Last updated

2024-08-05 10:54Z2 YR AGO

Reserved

2018-09-26

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
• CWE-122Heap-based Buffer OverflowVariant

Data version

5.1

Document digest

5d649721f272f05a85209e93f344adfcd4915f017570e11b5647c847b9c807c8

• www.debian.orgDSA-4309https://www.debian.org/security/2018/dsa-4309vendor-advisoryx_refsource_DEBIAN
• lists.debian.org[debian-lts-announce] 20181002 [SECURITY] [DLA 1528-1] strongswan security updatehttps://lists.debian.org/debian-lts-announce/2018/10/msg00001.htmlmailing-listx_refsource_MLIST
• www.strongswan.orghttps://www.strongswan.org/blog/2018/10/01/strongswan-vulnerability-%28cve-2018-17540%29.htmlx_refsource_CONFIRM
• usn.ubuntu.comUSN-3774-1https://usn.ubuntu.com/3774-1/vendor-advisoryx_refsource_UBUNTU
• download.strongswan.orghttps://download.strongswan.org/security/CVE-2018-17540/x_refsource_CONFIRM
• security.gentoo.orgGLSA-201811-16https://security.gentoo.org/glsa/201811-16vendor-advisoryx_refsource_GENTOO
• lists.opensuse.orgopenSUSE-SU-2019:2594http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00077.htmlvendor-advisoryx_refsource_SUSE
• lists.opensuse.orgopenSUSE-SU-2019:2598http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00001.htmlvendor-advisoryx_refsource_SUSE
• lists.opensuse.orgopenSUSE-SU-2020:0403http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00047.htmlvendor-advisoryx_refsource_SUSE