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CVE-2019-6486

22
FAUCET Score

CVE-2019-6486 is a high-severity vulnerability affecting Go versions before 1.10.8 and 1.11.5, specifically concerning its handling of P-521 and P-384 elliptic curves. This flaw allows remote attackers to trigger a denial of service through high CPU consumption or potentially facilitate ECDH private key recovery attacks. With a CVSS score of 8.2 (High), the vulnerability is network-exploitable with low attack complexity, posing a significant risk of service disruption and potential information disclosure. Despite its severity, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.10.8CPE matchmatch criteria
cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*
>= 1.11.1, < 1.11.5CPE matchmatch criteria
cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*
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:*:*:*:*:*:*:*
15.0CPE matchmatch criteria
cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.2HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
4.2
CvssVersion
3.0

Exploit Intelligence

EPSS Score
4.33%
Probability of exploitation in next 30 days
EPSS Percentile
90.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0433 is in the 83rd percentile among its peer group of 51,553 CVEs.

Social Chatter

No social media mentions found for this CVE.

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

Patch Available

Vendor Patches (7)

github_advisorypatch availablevia nvd_reference
View patch
redhatend of lifevia redhat_api
Product: Red Hat Ceph Storage 2Fixed in: golang
redhatend of lifevia redhat_api
Product: Red Hat Ceph Storage 3Fixed in: golang
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: go-toolset:rhel8/golang
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 8 (Liberty) Operational ToolsFixed in: golang
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 9 (Mitaka) Operational ToolsFixed in: golang
redhatend of lifevia redhat_api
Product: Red Hat Storage 3Fixed in: golang

Vendor Advisories (2)

redhatCVE-2019-6486Moderate

golang: crypto/elliptic implementations of P-521 and P-384 elliptic curves allow for denial of service

Jan 24, 2019
microsoft2019-Jan/CVE-2019-6486Important

Go before 1.10.8 and 1.11.x before 1.11.5 mishandles P-521 and P-384 elliptic curves, which allows attackers to cause a denial of service (CPU consumption) or possibly conduct ECDH private key recovery attacks.

Jan 8, 2019

References

lists.opensuse.org / opensuse-security-announce/2019-04/msg00042.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
github.com / golang/go/commit/42b42f71cf8f5956c09e66230293dfb5db652360
PatchThird Party Advisory
github.com / golang/go/issues/29903
Third Party Advisory
github.com / google/wycheproof
Third Party Advisory
groups.google.com / forum
lists.debian.org / debian-lts-announce/2019/02/msg00009.html
Mailing ListThird Party Advisory
debian.org / security/2019/dsa-4379
Third Party Advisory
debian.org / security/2019/dsa-4380
Third Party Advisory
securityfocus.com / bid/106740
Third Party AdvisoryVDB Entry