CVE & CISA-KEV Catalog

CVE-2020-16845

HIGHEPSS 91th pctl
7.5
CVSS v3
NVD

Description

Go before 1.13.15 and 14.x before 1.14.7 can have an infinite read loop in ReadUvarint and ReadVarint in encoding/binary via invalid inputs.

How to fix

Remediation Available
golangAmazon
Fixed in:0:1.13.15-1.amzn2.0.1
Fixed in:0:1.13.15-1.amzn2.0.1
golang-binAmazon
Fixed in:0:1.13.15-1.amzn2.0.1
Fixed in:0:1.13.15-1.amzn2.0.1
golang-docsAmazon
Fixed in:0:1.13.15-1.amzn2.0.1
golang-miscAmazon
Fixed in:0:1.13.15-1.amzn2.0.1
golang-raceAmazon
Fixed in:0:1.13.15-1.amzn2.0.1
golang-srcAmazon
Fixed in:0:1.13.15-1.amzn2.0.1
golang-testsAmazon
Fixed in:0:1.13.15-1.amzn2.0.1
golang-1.15Debian
Fixed in:1.15~rc2-1CVE-2020-16845

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

golang-1.13Ubuntu
Fixed in:1.13.8-1ubuntu1~16.04.3+esm2USN-5725-2

This Ubuntu release reached end-of-life on 2021-04-02.

Fixed in:1.13.8-1ubuntu1~18.04.4USN-5725-1

This Ubuntu release reached end-of-life on 2023-05-31. Extended security maintenance is available until 2028-04-01.

Fixed in:1.13.8-1ubuntu1.1USN-5725-1

This Ubuntu release reached end-of-life on 2025-05-31. Extended security maintenance is available until 2030-04-02.

Fixed in:1.13.8-1ubuntu2.22.04.1USN-5725-1
Fixed in:1.13.8-1ubuntu2.22.10.1USN-5725-1

This Ubuntu release reached end-of-life on 2023-07-20.

golang-1.13-goUbuntu
Fixed in:1.13.8-1ubuntu1~16.04.3+esm2USN-5725-2

This Ubuntu release reached end-of-life on 2021-04-02.

Fixed in:1.13.8-1ubuntu1~18.04.4USN-5725-1

This Ubuntu release reached end-of-life on 2023-05-31. Extended security maintenance is available until 2028-04-01.

Fixed in:1.13.8-1ubuntu1.1USN-5725-1

This Ubuntu release reached end-of-life on 2025-05-31. Extended security maintenance is available until 2030-04-02.

Fixed in:1.13.8-1ubuntu2.22.04.1USN-5725-1
Fixed in:1.13.8-1ubuntu2.22.10.1USN-5725-1

This Ubuntu release reached end-of-life on 2023-07-20.

golang-1.13-srcUbuntu
Fixed in:1.13.8-1ubuntu1~16.04.3+esm2USN-5725-2

This Ubuntu release reached end-of-life on 2021-04-02.

Fixed in:1.13.8-1ubuntu1~18.04.4USN-5725-1

This Ubuntu release reached end-of-life on 2023-05-31. Extended security maintenance is available until 2028-04-01.

Fixed in:1.13.8-1ubuntu1.1USN-5725-1

This Ubuntu release reached end-of-life on 2025-05-31. Extended security maintenance is available until 2030-04-02.

Fixed in:1.13.8-1ubuntu2.22.04.1USN-5725-1
Fixed in:1.13.8-1ubuntu2.22.10.1USN-5725-1

This Ubuntu release reached end-of-life on 2023-07-20.

Go Programming LanguageWindows application
Affected:1.13.15Fixed in:1.13.15https://go.dev
Affected:1.14 1.14.7Fixed in:1.14.7https://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 ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityNone
AvailabilityHigh

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

Exploit Intelligence

4.73%probability of exploitation in 30 days
91stpercentile

High risk: more likely to be exploited than 91% of all known CVEs.

References

Related Vulnerabilities

Other CWE-835 vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2020-13935High7.587%-Fix
CVE-2020-36227High7.578%-Fix
CVE-2022-0778High7.573%-Fix
CVE-2024-20353High8.671%KEV-
CVE-2019-14241High7.570%--
CVE-2017-16944High7.563%-Fix

Common questions

How do I fix CVE-2020-16845?

Published advisories record a fix for 12 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-2020-16845 being actively exploited?

Not that we know of. CVE-2020-16845 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 4.7% is the estimated probability that it will be exploited in the next 30 days. That is higher than 91% of all scored CVEs.

How severe is CVE-2020-16845?

CVE-2020-16845 has a CVSS v3 base score of 7.5, rated high. 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-2020-16845 affect?

Published advisories record a fix for golang (Amazon), golang-bin (Amazon), golang-docs (Amazon), golang-misc (Amazon), and 8 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.