PT-2026-3731 · Oracle+1 · Virtualbox+1

Gangmin Kim + 2 · Published 2026-01-01 · Updated 2026-05-12 · CVE-2026-21984

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Oracle VM VirtualBox versions 7.1.14 and 7.2.4

Description A difficult to exploit issue exists in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). An attacker with high privileges who has access to the system where Oracle VM VirtualBox is running can compromise the software. Successful exploitation can lead to a takeover of Oracle VM VirtualBox and may significantly impact other products.

Recommendations Update Oracle VM VirtualBox to a newer version that addresses this issue. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

LPE

Improper Access Control

RCE

Weakness Enumeration

CWE-284

CWE-20

Related Identifiers

BDU:2026-00843

CVE-2026-21984

ZDI-26-099

Affected Products

Virtualbox

Red Os

References · 19

• https://osv.dev/vulnerability/CVE-2026-21984 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-21984 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-00843 · Security Note
• https://oracle.com/security-alerts/cpujan2026.html · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-21984 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-21984 · Security Note
• https://zerodayinitiative.com/advisories/ZDI-26-099 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-21984 · Vendor Advisory
• https://redos.red-soft.ru/support/secure/uyazvimosti/support/secure/uyazvimosti/uyazvimost-virtualbox-guest-additions-cve-2026-21984-7.3 · Note
• https://t.me/CVEtracker/42639 · Telegram Post
• https://cybersecurity-help.cz/vdb/SB20260120194 · Note
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-21984 · Note
• https://redos.red-soft.ru/search/?iblock_id=24&q=CVE-2026-21984 · Note
• https://twitter.com/CVEnew/status/2013740398787592655 · Twitter Post
• https://redos.red-soft.ru/support/secure/uyazvimosti/support/secure/uyazvimosti-red-os-8-0/uyazvimost-virtualbox-guest-additions-cve-2026-21984-8.0 · Note