No exploitation reportedFix available

CVE-2021-3115

Q: Is CVE-2021-3115 actively exploited?

Active exploitation of CVE-2021-3115 has not been confirmed. Its EPSS score was 6.9% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2021-3115?

CVE-2021-3115 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.

No exploitation reported by the sources we read.

Published2021-01-26
Fixed in1.15.7 · 1.14.14
WeaknessCWE-427

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Go before 1.14.14 and 1.15.x before 1.15.7 on Windows is vulnerable to Command Injection and remote code execution when using the "go get" command to fetch modules that make use of cgo (for example, cgo can execute a gcc program from an untrusted download).

Timeline

dates in UTC

2021-01-2618:16CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-3115?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-3115?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV

Goversion to verify

Branch	Affected	Fixed in	Source
1.15	≥ 1.15, < 1.15.7	1.15.7	NVD
1.15	≥ 1.15.0-0, < 1.15.7	1.15.7	OSV
1.14	< 1.14.14	1.14.14	NVD · OSV

Fedoraproject fedora

Branch	Affected	Fixed in	Source
33.x	= 33	no fix published	NVD

Netapp cloud insights telegraf agent

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

1 more product in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Go to 1.15.7 · 1.14.14

Advisories and patches

blog.golang.orgVendor Advisory
groups.google.comRelease Notes

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.17.5read 2026-10-23
NVDCVSS 2.05.1read 2026-10-23
NVDweakness (CWE)CWE-427read 2026-10-23
FIRST EPSSEPSS score6.9 %2026-10-22
OSVaffected packages—

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Published: 2021-01-26
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2021-3115?

Is CVE-2021-3115 actively exploited?

Active exploitation of CVE-2021-3115 has not been confirmed. Its EPSS score was 6.9% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-3115?

CVE-2021-3115 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.

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