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CVE-2020-28366· NVD / CVE Program· CNA Go

Arbitrary code execution in go command with cgo in cmd/go and cmd/cgo

Code injection in the go command with cgo before Go 1.14.12 and Go 1.15.5 allows arbitrary code execution at build time via a malicious unquoted symbol name in a linked object file.

HighCVSS 7.5 · v3.1—No exploit Fix available
Published
Nov 18, 2020
Updated
Jun 16, 2026
EPSS
2.3% · 83th percentile
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Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 2.3%

Affected systems

VendorProduct
golanggo
fedoraprojectfedora
netappcloud insights telegraf agent
netapptrident

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • fedoraproject fedora32
  • fedoraproject fedora33
  • golang gobefore 1.14.12
  • golang go1.15 and later · before 1.15.5
  • netapp cloud insights telegraf agentall versions
  • netapp tridentall versions

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Go). Independent of NVD's CPE analysis and usually ahead of it.

  • Go toolchain cmd/cgo

    • before 1.14.12affected · semver
    • 1.15.0-0 and later · before 1.15.5affected · semver

  • Go toolchain cmd/go

    • before 1.14.12affected · semver
    • 1.15.0-0 and later · before 1.15.5affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:11golang-1.15before 1.15.5-11.15.5-1
Gotoolchainfrom 1.15.0-0 · before 1.15.51.15.5
Gotoolchainbefore 1.14.121.14.12
openSUSE:Leap 15.1go1.14before 1.14.12-lp151.22.11.14.12-lp151.22.1
openSUSE:Leap 15.2go1.14before 1.14.12-lp152.2.12.11.14.12-lp152.2.12.1
openSUSE:Leap 15.2go1.15before 1.15.5-lp152.2.11.15.5-lp152.2.1
openSUSE:Tumbleweedgo1.14before 1.14.15-1.61.14.15-1.6
openSUSE:Tumbleweedgo1.15before 1.15.15-1.21.15.15-1.2
Red Hat:devtools:2020go-toolset-1.14before 0:1.14.12-1.el7_90:1.14.12-1.el7_9
Red Hat:devtools:2020go-toolset-1.14-buildbefore 0:1.14.12-1.el7_90:1.14.12-1.el7_9
Red Hat:devtools:2020go-toolset-1.14-golangbefore 0:1.14.12-1.el7_90:1.14.12-1.el7_9
Red Hat:devtools:2020go-toolset-1.14-golang-binbefore 0:1.14.12-1.el7_90:1.14.12-1.el7_9
Red Hat:devtools:2020go-toolset-1.14-golang-docsbefore 0:1.14.12-1.el7_90:1.14.12-1.el7_9
Red Hat:devtools:2020go-toolset-1.14-golang-miscbefore 0:1.14.12-1.el7_90:1.14.12-1.el7_9
Red Hat:devtools:2020go-toolset-1.14-golang-racebefore 0:1.14.12-1.el7_90:1.14.12-1.el7_9
Red Hat:devtools:2020go-toolset-1.14-golang-srcbefore 0:1.14.12-1.el7_90:1.14.12-1.el7_9
Red Hat:devtools:2020go-toolset-1.14-golang-testsbefore 0:1.14.12-1.el7_90:1.14.12-1.el7_9
Red Hat:devtools:2020go-toolset-1.14-runtimebefore 0:1.14.12-1.el7_90:1.14.12-1.el7_9
Red Hat:enterprise_linux:8::appstreamdelvebefore 0:1.4.1-1.module+el8.3.0+7840+63dfb1ed0:1.4.1-1.module+el8.3.0+7840+63dfb1ed
Red Hat:enterprise_linux:8::appstreamdelve-debuginfobefore 0:1.4.1-1.module+el8.3.0+7840+63dfb1ed0:1.4.1-1.module+el8.3.0+7840+63dfb1ed
Red Hat:enterprise_linux:8::appstreamdelve-debugsourcebefore 0:1.4.1-1.module+el8.3.0+7840+63dfb1ed0:1.4.1-1.module+el8.3.0+7840+63dfb1ed
Red Hat:enterprise_linux:8::appstreamgo-toolsetbefore 0:1.14.12-1.module+el8.3.0+8784+380394dc0:1.14.12-1.module+el8.3.0+8784+380394dc
Red Hat:enterprise_linux:8::appstreamgolangbefore 0:1.14.12-1.module+el8.3.0+8784+380394dc0:1.14.12-1.module+el8.3.0+8784+380394dc
Red Hat:enterprise_linux:8::appstreamgolang-binbefore 0:1.14.12-1.module+el8.3.0+8784+380394dc0:1.14.12-1.module+el8.3.0+8784+380394dc

+8

Same product

golang: all records

Other highest-scoring records for the same primary product.

  • CVE-2018-7187The "go get" implementation in Go 1.9.4, when the -insecure command-line option is used, does not validate the import path (get/vcs.go only
    54Plan
  • CVE-2018-16873In Go before 1.10.6 and 1.11.x before 1.11.3, the "go get" command is vulnerable to remote code execution when executed with the -u flag and
    52Plan
  • CVE-2021-38297Go before 1.16.9 and 1.17.x before 1.17.2 has a Buffer Overflow via large arguments in a function invocation from a WASM module, when GOARCH
    42Plan
  • CVE-2019-14809net/url in Go before 1.11.13 and 1.12.x before 1.12.8 mishandles malformed hosts in URLs, leading to an authorization bypass in some applica
    42Plan
  • CVE-2015-5739The net/http library in net/textproto/reader.go in Go before 1.4.3 does not properly parse HTTP header keys, which allows remote attackers t
    42Plan
  • CVE-2017-15041Go before 1.8.4 and 1.9.x before 1.9.1 allows "go get" remote command execution.
    42Plan

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Go toolchain cmd/cgo1.14.12Vendor (CNA)
Go toolchain cmd/cgo1.15.5Vendor (CNA)
Go toolchain cmd/go1.14.12Vendor (CNA)
Go toolchain cmd/go1.15.5Vendor (CNA)
debian:golang-1.151.15.5-1 · Debian:11Package registry (OSV)
Go:toolchain1.14.12Package registry (OSV)
Go:toolchain1.15.5Package registry (OSV)
opensuse:go1.141.14.12-lp151.22.1 · openSUSE:Leap 15.1Package registry (OSV)
opensuse:go1.151.15.5-lp152.2.1 · openSUSE:Leap 15.2Package registry (OSV)
red hat:delve0:1.4.1-1.module+el8.3.0+7840+63dfb1ed · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:delve-debuginfo0:1.4.1-1.module+el8.3.0+7840+63dfb1ed · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:go-toolset-1.140:1.14.12-1.el7_9 · Red Hat:devtools:2020Package registry (OSV)
red hat:go-toolset-1.14-build0:1.14.12-1.el7_9 · Red Hat:devtools:2020Package registry (OSV)
red hat:go-toolset-1.14-golang0:1.14.12-1.el7_9 · Red Hat:devtools:2020Package registry (OSV)
red hat:go-toolset-1.14-golang-bin0:1.14.12-1.el7_9 · Red Hat:devtools:2020Package registry (OSV)
red hat:go-toolset-1.14-golang-docs0:1.14.12-1.el7_9 · Red Hat:devtools:2020Package registry (OSV)
red hat:go-toolset-1.14-golang-misc0:1.14.12-1.el7_9 · Red Hat:devtools:2020Package registry (OSV)
red hat:go-toolset-1.14-golang-race0:1.14.12-1.el7_9 · Red Hat:devtools:2020Package registry (OSV)
red hat:go-toolset-1.14-golang-src0:1.14.12-1.el7_9 · Red Hat:devtools:2020Package registry (OSV)
red hat:go-toolset-1.14-golang-tests0:1.14.12-1.el7_9 · Red Hat:devtools:2020Package registry (OSV)
red hat:go-toolset-1.14-runtime0:1.14.12-1.el7_9 · Red Hat:devtools:2020Package registry (OSV)
suse:go1.141.14.12-1.26.1 · SUSE:Linux Enterprise Module for Development Tools 15 SP1Package registry (OSV)
suse:go1.151.15.5-1.11.1 · SUSE:Linux Enterprise Module for Development Tools 15 SP1Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • Special conditions such as timing or configuration are required.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-94 · Improper Control of Generation of Code ('Code Injection')

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records