HOMEVULNERABILITIESCVE-2021-20295
MEDIUM

CVE-2021-20295

CWE-125Published: April 1, 2022· Updated: Jun 17, 2026

6.5
CVSS v3.1

Official Description

It was discovered that the update for the virt:rhel module in the RHSA-2020:4676 (https://access.redhat.com/errata/RHSA-2020:4676) erratum released as part of Red Hat Enterprise Linux 8.3 failed to include the fix for the qemu-kvm component issue CVE-2020-10756, which was previously corrected in virt:rhel/qemu-kvm via erratum RHSA-2020:4059 (https://access.redhat.com/errata/RHSA-2020:4059). CVE-2021-20295 was assigned to that Red Hat specific security regression. For more details about the original security issue CVE-2020-10756, refer to bug 1835986 or the CVE page: https://access.redhat.com/security/cve/CVE-2020-10756.

NVD Source

Technical Analysis

CVE-2021-20295 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 6.5.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeChanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Affected Vendors & Products

qemu1 product(s)
qemu
Source: NVD CPE · 1 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

ADVISORYhttps://access.redhat.com/security/cve/CVE-2020-10756
ADVISORYhttps://bugzilla.redhat.com/show_bug.cgi?id=1944075
ADVISORYhttps://security.netapp.com/advisory/ntap-20220519-0003/
ADVISORYhttps://access.redhat.com/security/cve/CVE-2020-10756
ADVISORYhttps://bugzilla.redhat.com/show_bug.cgi?id=1944075
ADVISORYhttps://security.netapp.com/advisory/ntap-20220519-0003/

All References (6)

→
https://access.redhat.com/security/cve/CVE-2020-10756Vendor Advisory
→
https://bugzilla.redhat.com/show_bug.cgi?id=1944075Issue Tracking · Vendor Advisory
→
https://security.netapp.com/advisory/ntap-20220519-0003/Third Party Advisory
→
https://access.redhat.com/security/cve/CVE-2020-10756Vendor Advisory
→
https://bugzilla.redhat.com/show_bug.cgi?id=1944075Issue Tracking · Vendor Advisory
→
https://security.netapp.com/advisory/ntap-20220519-0003/Third Party Advisory

Quick Facts

CVE IDCVE-2021-20295
CVSS Score6.5 / 10
SeverityMEDIUM
WeaknessCWE-125
CISA KEVNo
Affected1 vendor(s)
PublishedApr 1, 2022

Related CVEs (CWE-125)

CVE-2009-2523
10.0
CVE-2013-0767
10.0
CVE-2021-41556
10.0
CVE-2021-21777
10.0
CVE-2017-14451
10.0
CVE-2023-26489
9.9

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-20295 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.
← All Vulnerabilities·Search for CVE-2021-20295·NVD