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TI-2021-01994 Aliases CVE-2021-2321GHSA-c5g7-338r-hf82

Out-of-bounds read in Oracle VM VirtualBox

Priority LOW 28CWE-125Published · Updated

Key facts

Attack vector
Local
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-125 and the CVSS impact.

Summary

Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). The supported version that is affected is Prior to 6.1.20. 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 unauthorized access to critical data or complete access to all Oracle VM VirtualBox accessible data. CVSS 3.1 Base Score 6.0 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00563 47th percentileScored 2026-11-07
Fix Fixed VM VirtualBox (Oracle Corporation): 6.1.20

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
OracleVM VirtualBoxbefore 6.1.206.1.20Patch availableCNA
  • VM VirtualBox VendorOracle Affected before 6.1.20 Fixed in 6.1.20 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:oracle:vm_virtualbox:*:*:*:*:*:*:*:*before 6.1.20VulnerableOracle
  • cpe:2.3:a:oracle:vm_virtualbox:*:*:*:*:*:*:*:* Versions before 6.1.20 Vulnerable ·Oracle

Remediation

  • Fix · CNA VM VirtualBox (Oracle Corporation) Fixed in 6.1.20

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-2321
  2. 2026-10-03 Alias added: GHSA-c5g7-338r-hf82

References

Patch 1

  • TI-2019-02266 Injection in Oracle Tape Library ACSLS KEVCVSS 3.1CRITICAL 9.8
  • TI-2015-00205 Heap-based buffer overflow in the __nss_hostname_digits_dots function in glibc 2.2, and… CVSS 2.0HIGH 10.0
  • TI-2025-21985 Integer overflow in Oracle VM VirtualBox CVSS 3.1HIGH 8.1
  • TI-2024-13903 Improper privilege management in Oracle VM VirtualBox CVSS 3.1HIGH 7.8
  • TI-2017-03706 Observable discrepancy in Intel Microprocessors with Speculative Execution CVSS 3.1MEDIUM 5.6
  • TI-2015-06741 The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows… CVSS 3.1CRITICAL 10.0
See all 482 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences