CVE & CISA-KEV Catalog

CVE-2021-44717

MEDIUMEPSS 78th pctl

4.8

CVSS v3

Description

Go before 1.16.12 and 1.17.x before 1.17.5 on UNIX allows write operations to an unintended file or unintended network connection as a consequence of erroneous closing of file descriptor 0 after file-descriptor exhaustion.

How to fix

Remediation Available

golangAmazon

Fixed in:0:1.16.15-1.amzn2.0.1

Fixed in:0:1.16.15-1.amzn2.0.1

Fixed in:0:1.19.3-2.amzn2023.0.2

Fixed in:0:1.19.3-2.amzn2023.0.2

Fixed in:0:1.19.3-2.amzn2023.0.2

golang-binAmazon

Fixed in:0:1.16.15-1.amzn2.0.1

Fixed in:0:1.16.15-1.amzn2.0.1

Fixed in:0:1.19.3-2.amzn2023.0.2

Fixed in:0:1.19.3-2.amzn2023.0.2

Fixed in:0:1.19.3-2.amzn2023.0.2

golang-docsAmazon

Fixed in:0:1.16.15-1.amzn2.0.1

Fixed in:0:1.19.3-2.amzn2023.0.2

golang-miscAmazon

Fixed in:0:1.16.15-1.amzn2.0.1

Fixed in:0:1.19.3-2.amzn2023.0.2

golang-raceAmazon

Fixed in:0:1.16.15-1.amzn2.0.1

Fixed in:0:1.19.3-2.amzn2023.0.2

golang-sharedAmazon

Fixed in:0:1.16.15-1.amzn2.0.1

Fixed in:0:1.16.15-1.amzn2.0.1

Fixed in:0:1.19.3-2.amzn2023.0.2

Fixed in:0:1.19.3-2.amzn2023.0.2

Fixed in:0:1.19.3-2.amzn2023.0.2

golang-srcAmazon

Fixed in:0:1.16.15-1.amzn2.0.1

Fixed in:0:1.19.3-2.amzn2023.0.2

golang-testsAmazon

Fixed in:0:1.16.15-1.amzn2.0.1

Fixed in:0:1.19.3-2.amzn2023.0.2

golang-1.15Debian

Fixed in:1.15.15-1~deb11u2CVE-2021-44717

This Debian release reached end-of-life on 2024-08-14.

Go Programming LanguageWindows application

Affected:1.17.0 1.17.5Fixed in:1.17.5https://go.dev

Affected:1.16.12Fixed in:1.16.12https://go.dev

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Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityNone

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

Exploit Intelligence

1.86%probability of exploitation in 30 days

78thpercentile

Elevated risk: more likely to be exploited than 78% of all known CVEs.

References

Patch1

groups.google.com

Third-Party Advisory3

Other references2

Related Vulnerabilities

Other CWE-404 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2022-44267	Medium	6.5	77%	-	Fix
CVE-2018-8120	High	7.0	73%	KEV + Ransom	-
CVE-2018-8210	High	7.8	25%	-	-
CVE-2018-8639	High	7.8	22%	KEV + Ransom	-
CVE-2023-3206	Medium	5.3	19%	-	-
CVE-2018-8450	High	8.8	16%	-	-

Common questions

How do I fix CVE-2021-44717?

Published advisories record a fix for 10 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2021-44717 being actively exploited?

Not that we know of. CVE-2021-44717 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 1.9% is the estimated probability that it will be exploited in the next 30 days. That is higher than 78% of all scored CVEs.

How severe is CVE-2021-44717?

CVE-2021-44717 has a CVSS v3 base score of 4.8, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2021-44717 affect?

Published advisories record a fix for golang (Amazon), golang-bin (Amazon), golang-docs (Amazon), golang-misc (Amazon), and 6 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-17.