HOMEVULNERABILITIESCVE-2020-10772
HIGH

CVE-2020-10772

CWE-406Published: November 27, 2020· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official Description

An incomplete fix for CVE-2020-12662 was shipped for Unbound in Red Hat Enterprise Linux 7, as part of erratum RHSA-2020:2414. Vulnerable versions of Unbound could still amplify an incoming query into a large number of queries directed to a target, even with a lower amplification ratio compared to versions of Unbound that shipped before the mentioned erratum. This issue is about the incomplete fix for CVE-2020-12662, and it does not affect upstream versions of Unbound.

NVD Source

Technical Analysis

CVE-2020-10772 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

nlnetlabs1 product(s)
unbound
Red Hat1 product(s)
enterprise linux
Source: NVD CPE · 2 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
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Official Patches & Advisories

ADVISORYhttps://bugzilla.redhat.com/show_bug.cgi?id=1846026
ADVISORYhttps://bugzilla.redhat.com/show_bug.cgi?id=1846026

All References (2)

→
https://bugzilla.redhat.com/show_bug.cgi?id=1846026Issue Tracking · Third Party Advisory
→
https://bugzilla.redhat.com/show_bug.cgi?id=1846026Issue Tracking · Third Party Advisory

Quick Facts

CVE IDCVE-2020-10772
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-406
CISA KEVNo
Affected2 vendor(s)
PublishedNov 27, 2020

Related CVEs (CWE-406)

CVE-2021-38135
9.8
CVE-2021-38425
9.1
CVE-2021-38429
9.1
CVE-2021-38487
9.1
CVE-2021-43547
8.2
CVE-2021-4234
7.5

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-10772 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. CVE data is provided under the NVD usage policy.
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