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CVE-2018-17540

25
FAUCET Score

CVE-2018-17540 describes a buffer overflow vulnerability in the gmp plugin of strongSwan versions prior to 5.7.1, affecting various distributions including Canonical and Debian Linux. This vulnerability carries a CVSS score of 7.5 (High), indicating it can be exploited remotely with low complexity and no user interaction, potentially leading to a denial of service. Despite its severity, there is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 5.7.1CPE matchmatch criteria
cpe:2.3:a:strongswan:strongswan:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
14.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
16.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.51%
Probability of exploitation in next 30 days
EPSS Percentile
88.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0351 is in the 79th percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2018-17540Low

strongswan: heap buffer overflow using crafted certificates

Oct 2, 2018

References

lists.opensuse.org / opensuse-security-announce/2019-11/msg00077.html
lists.opensuse.org / opensuse-security-announce/2019-12/msg00001.html
lists.opensuse.org / opensuse-security-announce/2020-03/msg00047.html
download.strongswan.org / security/CVE-2018-17540
PatchVendor Advisory
lists.debian.org / debian-lts-announce/2018/10/msg00001.html
Mailing ListThird Party Advisory
security.gentoo.org / glsa/201811-16
Third Party Advisory
usn.ubuntu.com / 3774-1
Third Party Advisory
debian.org / security/2018/dsa-4309
Third Party Advisory
strongswan.org / blog/2018/10/01/strongswan-vulnerability-%28cve-2018-17540%29.html