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CVE-2021-2074

Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). The...

8.2 High

Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). The supported version that is affected is Prior to 6.1.18. Easily exploitable vulnerability allows high privileged attacker with logon to the infrastructure where Oracle VM VirtualBox executes to compromise Oracle VM VirtualBox. While the vulnerability is in Oracle VM VirtualBox, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in takeover of Oracle VM VirtualBox. CVSS 3.1 Base Score 8.2 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H).

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
High
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

0.50%Down 0.1 points since Apr 14, 2021
90%50%10%1%

What each source reports

CVE List Score used 8.2

Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). The supported version that is affected is Prior to 6.1.18. Easily exploitable vulnerability allows high privileged attacker with logon to the infrastructure where Oracle VM VirtualBox executes to compromise Oracle VM VirtualBox. While the vulnerability is in Oracle VM VirtualBox, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in takeover of Oracle VM VirtualBox. CVSS 3.1 Base Score 8.2 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H).

Record
CVE-2021-2074
CVSS 3.1
8.2 HighCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Updated
2026-11-02
EUVDEUVD-2021-16533 8.2

Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). The supported version that is affected is Prior to 6.1.18. Easily exploitable vulnerability allows high privileged attacker with logon to the infrastructure where Oracle VM VirtualBox executes to compromise Oracle VM VirtualBox. While the vulnerability is in Oracle VM VirtualBox, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in takeover of Oracle VM VirtualBox. CVSS 3.1 Base Score 8.2 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H).

Record
EUVD-2021-16533
CVSS 3.1
8.2 HighCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Updated
2026-11-03
GitHub AdvisoriesGHSA-858g-9g73-qcmg No score

Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). The...

Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). The supported version that is affected is Prior to 6.1.18. Easily exploitable vulnerability allows high privileged attacker with logon to the infrastructure where Oracle VM VirtualBox executes to compromise Oracle VM VirtualBox. While the vulnerability is in Oracle VM VirtualBox, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in takeover of Oracle VM VirtualBox. CVSS 3.1 Base Score 8.2 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H).

Record
GHSA-858g-9g73-qcmg
Updated
2026-11-02
NVD 8.2

Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). The supported version that is affected is Prior to 6.1.18. Easily exploitable vulnerability allows high privileged attacker with logon to the infrastructure where Oracle VM VirtualBox executes to compromise Oracle VM VirtualBox. While the vulnerability is in Oracle VM VirtualBox, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in takeover of Oracle VM VirtualBox. CVSS 3.1 Base Score 8.2 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H).

Record
CVE-2021-2074
CVSS 3.1
8.2 HighCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CVSS 2.0
4.6 MediumAV:L/AC:L/Au:N/C:P/I:P/A:P
Updated
2026-11-02
OSVUBUNTU-CVE-2021-2074 8.2

Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). The supported version that is affected is Prior to 6.1.18. Easily exploitable vulnerability allows high privileged attacker with logon to the infrastructure where Oracle VM VirtualBox executes to compromise Oracle VM VirtualBox. While the vulnerability is in Oracle VM VirtualBox, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in takeover of Oracle VM VirtualBox. CVSS 3.1 Base Score 8.2 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H).

Record
UBUNTU-CVE-2021-2074
CVSS 3.1
8.2 HighCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Updated
2026-11-02
OSVopenSUSE-SU-2021:0165-1 No score

Security update for virtualbox

This update for virtualbox fixes the following issues:

Version update to 6.1.18 (released January 19 2021)

This is a maintenance release. The following items were fixed and/or added:

  • Nested VM: Fixed hangs when executing SMP nested-guests under certain conditions on Intel hosts (bug #19315, #19561)

  • OCI integration: Cloud Instance parameters parsing is improved on import (bug #19156)

  • Network: UDP checksum offloading in e1000 no longer produces zero checksums (bug #19930)

  • Network: Fixed Host-Only Ethernet Adapter DHCP, guest os can not get IP on host resume (bug #19620)

  • NAT: Fixed mss parameter handing (bug #15256)

  • macOS host: Multiple optimizations for BigSur

  • Audio: Fixed issues with audio playback after host goes to sleep (bug #18594)

  • Documentation: Some content touch-up and table formatting fixes

  • Linux host and guest: Support kernel version 5.10 (bug #20055)

  • Solaris host: Fix regression breaking VGA text mode since version 6.1.0

  • Guest Additions: Fixed a build failure affecting CentOS 8.2-2004 and later (bug #20091)

  • Guest Additions: Fixed a build failure affecting Linux kernels 3.2.0 through 3.2.50 (bug #20006)

  • Guest Additions: Fixed a VM segfault on copy with shared clipboard with X11 (bug #19226)

  • Shared Folder: Fixed error with remounting on Linux guests

  • Fixes CVE-2021-2074, boo#1181197 and CVE-2021-2129, boo#1181198.

  • Disable build of guest modules. These are included in recent kernels

  • Fix additional mouse control dialog issues.

Record
openSUSE-SU-2021:0165-1
Updated
2026-11-02
OSVopenSUSE-SU-2021:0630-1 No score

Security update for virtualbox

This update for virtualbox fixes the following issues:

  • Version bump to 6.1.20 (released April 20 2021 by Oracle) Fixes boo#1183329 'virtualbox 6.1.18 crashes when it runs nested VM' Fixes boo#1183125 'Leap 15.3 installation in Virtualbox without VBox integration' Fixes CVE-2021-2264 and boo#1184542. The directory for the <user>.start files for autostarting VMs is moved from /etc/vbox to /etc/vbox/autostart.d. In addition, the autostart service is hardened (by Oracle).
  • change the modalias for guest-tools and guest-x11 to get them to autoinstall.
  • Own %{_sysconfdir}/X11/xinit/xinitrc.d as default packages (eg systemd) no longer do so, breaking package build.
  • Update fixes_for_leap15.3 for kernel API changes between 5.3.18-45 and 5.3.18-47.
  • update-extpack.sh: explicitly use https:// protocol for authenticity. The http:// URL is currently redirected to https:// but don't rely on this.
  • Add code to generate guest modules for Leap 15.2 and Leap 15.3. The kernel versions do not allow window resizing. Files 'virtualbox-kmp-files-leap' and 'vboxguestconfig.sh' are added
  • Fixes CVE-2021-2074, boo#1181197 and CVE-2021-2129, boo#1181198.
  • Under some circumstances, shared folders are mounted as root.
Record
openSUSE-SU-2021:0630-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:11501-1 No score

python3-virtualbox-6.1.26-3.2 on GA media

These are all security issues fixed in the python3-virtualbox-6.1.26-3.2 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:11501-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
virtualbox
Ubuntu:16.04:LTS
All versions, plus listed versions
5.0.4-dfsg-25.0.8-dfsg-15.0.10-dfsg-15.0.10-dfsg-25.0.10-dfsg-3
Show 25 moreShow less
5.0.10-dfsg-45.0.10-dfsg-55.0.10-dfsg-65.0.10-dfsg-75.0.12-dfsg-15.0.12-dfsg-25.0.14-dfsg-15.0.14-dfsg-25.0.14-dfsg-2build15.0.16-dfsg-25.0.16-dfsg-35.0.18-dfsg-15.0.18-dfsg-1ubuntu15.0.18-dfsg-25.0.18-dfsg-2build15.0.18-dfsg-2ubuntu15.0.24-dfsg-0ubuntu1.16.04.15.0.32-dfsg-0ubuntu1.16.04.25.0.36-dfsg-0ubuntu1.16.04.25.0.40-dfsg-0ubuntu1.16.04.15.0.40-dfsg-0ubuntu1.16.04.25.1.34-dfsg-0ubuntu1.16.04.25.1.38-dfsg-0ubuntu1.16.04.15.1.38-dfsg-0ubuntu1.16.04.25.1.38-dfsg-0ubuntu1.16.04.3
None known
virtualbox
Ubuntu:18.04:LTS
All versions, plus listed versions
5.1.30-dfsg-15.2.0-dfsg-1build25.2.0-dfsg-25.2.0-dfsg-45.2.0-dfsg-5
Show 26 moreShow less
5.2.2-dfsg-25.2.2-dfsg-3~build15.2.2-dfsg-35.2.4-dfsg-15.2.4-dfsg-25.2.6-dfsg-15.2.6-dfsg-25.2.6-dfsg-35.2.6-dfsg-3build15.2.6-dfsg-55.2.8-dfsg-25.2.8-dfsg-35.2.8-dfsg-55.2.8-dfsg-65.2.8-dfsg-75.2.10-dfsg-15.2.10-dfsg-25.2.10-dfsg-55.2.10-dfsg-65.2.10-dfsg-6ubuntu18.04.15.2.18-dfsg-2~ubuntu18.04.15.2.18-dfsg-2~ubuntu18.04.35.2.18-dfsg-2~ubuntu18.04.55.2.32-dfsg-0~ubuntu18.04.15.2.34-dfsg-0~ubuntu18.04.15.2.42-dfsg-0~ubuntu1.18.04.1
None known
virtualbox
Ubuntu:20.04:LTS
All versions, plus listed versions
6.0.14-dfsg-16.0.14-dfsg-2~build16.0.14-dfsg-26.1.0-dfsg-3build16.1.0-dfsg-3build2
Show 18 moreShow less
6.1.2-dfsg-16.1.2-dfsg-1build16.1.4-dfsg-16.1.4-dfsg-2~build16.1.4-dfsg-26.1.4-dfsg-46.1.6-dfsg-16.1.10-dfsg-1~ubuntu1.20.04.16.1.16-dfsg-6~ubuntu1.20.04.16.1.16-dfsg-6~ubuntu1.20.04.26.1.22-dfsg-2~ubuntu1.20.04.16.1.26-dfsg-3~ubuntu1.20.04.16.1.26-dfsg-3~ubuntu1.20.04.26.1.32-dfsg-1~ubuntu1.20.04.16.1.34-dfsg-3~ubuntu1.20.04.16.1.38-dfsg-3~ubuntu1.20.04.16.1.48-dfsg-1~ubuntu1.20.04.16.1.50-dfsg-1~ubuntu1.20.04.1
None known
virtualbox
openSUSE:Leap 15.2
From an advisory covering 2 CVEs
before 6.1.18-lp152.2.11.1
6.1.18-lp152.2.11.1
virtualbox-kmp
openSUSE:Leap 15.2
From an advisory covering 2 CVEs
before 6.1.18-lp152.2.11.1
6.1.18-lp152.2.11.1
virtualbox
openSUSE:Leap 15.2
From an advisory covering 3 CVEs
before 6.1.20-lp152.2.21.1
6.1.20-lp152.2.21.1
virtualbox-kmp
openSUSE:Leap 15.2
From an advisory covering 3 CVEs
before 6.1.20-lp152.2.21.1
6.1.20-lp152.2.21.1
virtualbox
openSUSE:Tumbleweed
From an advisory covering 43 CVEs
before 6.1.26-3.2
6.1.26-3.2

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-2074 is a high vulnerability (CVSS 8.2) in Oracle Vm Virtualbox, published January 20, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.50%, the 43rd percentile. No source names a fixed version.

References

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