HOMEVULNERABILITIESCVE-2020-8277
HIGH

CVE-2020-8277

CWE-400Published: November 19, 2020· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official Description

A Node.js application that allows an attacker to trigger a DNS request for a host of their choice could trigger a Denial of Service in versions < 15.2.1, < 14.15.1, and < 12.19.1 by getting the application to resolve a DNS record with a larger number of responses. This is fixed in 15.2.1, 14.15.1, and 12.19.1.

NVD Source

Technical Analysis

CVE-2020-8277 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
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

Affected Vendors & Products

c-ares_project1 product(s)
c-ares
Fedora1 product(s)
fedora
Node.js1 product(s)
node.js
Oracle5 product(s)
blockchain platformgraalvmjd edwards enterpriseone toolsmysql clusterretail xstore point of service
Source: NVD CPE · 13 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://nodejs.org/en/blog/vulnerability/november-2020-security-releases/
PATCHhttps://www.oracle.com//security-alerts/cpujul2021.html
PATCHhttps://www.oracle.com/security-alerts/cpuApr2021.html
PATCHhttps://www.oracle.com/security-alerts/cpuapr2022.html
PATCHhttps://www.oracle.com/security-alerts/cpujan2021.html
PATCHhttps://www.oracle.com/security-alerts/cpuoct2021.html
PATCHhttps://nodejs.org/en/blog/vulnerability/november-2020-security-releases/
PATCHhttps://www.oracle.com//security-alerts/cpujul2021.html
PATCHhttps://www.oracle.com/security-alerts/cpuApr2021.html
PATCHhttps://www.oracle.com/security-alerts/cpuapr2022.html
PATCHhttps://www.oracle.com/security-alerts/cpujan2021.html
PATCHhttps://www.oracle.com/security-alerts/cpuoct2021.html
ADVISORYhttps://hackerone.com/reports/1033107
ADVISORYhttps://security.gentoo.org/glsa/202012-11
ADVISORYhttps://security.gentoo.org/glsa/202101-07
ADVISORYhttps://hackerone.com/reports/1033107
ADVISORYhttps://security.gentoo.org/glsa/202012-11
ADVISORYhttps://security.gentoo.org/glsa/202101-07

All References (26)

→
https://hackerone.com/reports/1033107Permissions Required · Third Party Advisory
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A7WH7W46OZSEUHWBHD7TCH3LRFY52V6Z/
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BEJBY3RJB3XWUOJFGZM5E3EMQ7MFM3UT/
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EEIV4CH6KNVZK63Y6EKVN2XDW7IHSJBJ/
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VXLJY4764LYVJPC7NCDLE2UMQ3QC5OI2/
→
https://nodejs.org/en/blog/vulnerability/november-2020-security-releases/Patch · Vendor Advisory
→
https://security.gentoo.org/glsa/202012-11Third Party Advisory
→
https://security.gentoo.org/glsa/202101-07Third Party Advisory
→
https://www.oracle.com//security-alerts/cpujul2021.htmlPatch · Third Party Advisory
→
https://www.oracle.com/security-alerts/cpuApr2021.htmlPatch · Third Party Advisory
→
https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch · Third Party Advisory
→
https://www.oracle.com/security-alerts/cpujan2021.htmlPatch · Third Party Advisory
→
https://www.oracle.com/security-alerts/cpuoct2021.htmlPatch · Third Party Advisory
→
https://hackerone.com/reports/1033107Permissions Required · Third Party Advisory
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A7WH7W46OZSEUHWBHD7TCH3LRFY52V6Z/

Quick Facts

CVE IDCVE-2020-8277
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-400
CISA KEVNo
Affected4 vendor(s)
PublishedNov 19, 2020

Related CVEs (CWE-400)

CVE-2018-11936
9.8
CVE-2019-10952
9.8
CVE-2017-9119
9.8
CVE-2024-45166
9.8
CVE-2015-4412
9.8
CVE-2019-10747
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-8277 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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