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CVE-2018-16875

27
FAUCET Score

CVE-2018-16875 describes a CPU denial-of-service vulnerability in the crypto/x509 package of Go versions prior to 1.10.6 and 1.11.3, affecting Go TLS servers accepting client certificates and TLS clients. Attackers can craft pathological inputs to exhaust CPU resources during chain verification. With a CVSS score of 7.5 (High), this vulnerability is easily exploitable over the network with low attack complexity, leading to a high availability impact. There is no evidence of active exploitation, public exploit code, or significant community discussion beyond a single Reddit mention.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.10.6CPE matchmatch criteria
cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*
>= 1.11.0, < 1.11.3CPE matchmatch criteria
cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*
42.3CPE matchmatch criteria
cpe:2.3:o:opensuse:leap:42.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.9MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
6.33%
Probability of exploitation in next 30 days
EPSS Percentile
92.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0633 is in the 88th percentile among its peer group of 51,553 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 Patches (7)

gentooworkaround availablevia nvd_reference
View patch
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift Container Platform 3.10Fixed in: atomic-openshift
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift Container Platform 3.9Fixed in: atomic-openshift
redhatno patchvia redhat_api
Product: Red Hat Ceph Storage 3Fixed in: golang
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: golang
redhatend of lifevia redhat_api
Product: Red Hat Ceph Storage 2Fixed in: golang
redhatend of lifevia redhat_api
Product: Red Hat Storage 3Fixed in: golang

Vendor Advisories (1)

redhatCVE-2018-16875Moderate

golang: crypto/x509 allows for denial of service via crafted TLS client certificate

Dec 13, 2018

References

lists.opensuse.org / opensuse-security-announce/2019-03/msg00044.html
Third Party Advisory
lists.opensuse.org / opensuse-security-announce/2019-05/msg00060.html
lists.opensuse.org / opensuse-security-announce/2019-06/msg00011.html
lists.opensuse.org / opensuse-security-announce/2019-06/msg00015.html
lists.opensuse.org / opensuse-security-announce/2019-07/msg00010.html
bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party Advisory
groups.google.com / forum
security.gentoo.org / glsa/201812-09
MitigationThird Party Advisory
securityfocus.com / bid/106230
Third Party AdvisoryVDB Entry