PT-2026-3734 · Oracle+1 · Oracle Virtualization+2

Zhenghao Li · Published 2026-01-01 · Updated 2026-05-12 · CVE-2026-21987

Positive Technologies (AI Summary)

CVSS v3.1

8.2

High

Base vector

AV:L/AC:L/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 An easily exploitable issue exists in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). A high-privileged attacker with access to the infrastructure where Oracle VM VirtualBox runs can compromise the software. Successful exploitation can lead to a takeover of Oracle VM VirtualBox and may significantly impact additional products.

Recommendations Oracle VM VirtualBox version 7.1.14 should be updated. Oracle VM VirtualBox version 7.2.4 should be updated.

Fix

RCE

Information Disclosure

Weakness Enumeration

CWE-20

CWE-200

Related Identifiers

BDU:2026-00845

CVE-2026-21987

Affected Products

Virtualbox

Oracle Virtualization

Red Os

References · 18

• https://oracle.com/security-alerts/cpujan2026.html · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-21987 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-21987 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-21987 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-21987 · Security Note
• https://cve.org/CVERecord?id=CVE-2026-21987 · Security Note
• https://bdu.fstec.ru/vul/2026-00845 · Security Note
• https://redos.red-soft.ru/support/secure/uyazvimosti/support/secure/uyazvimosti-red-os-8-0/uyazvimost-virtualbox-cve-2026-21987-8.0 · Note
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-21987 · Note
• https://redos.red-soft.ru/support/secure/uyazvimosti/support/secure/uyazvimosti-red-os-8-0/uyazvimost-virtualbox-kmod-cve-2026-21987-8.0 · Note
• https://redos.red-soft.ru/support/secure/uyazvimosti/support/secure/uyazvimosti/uyazvimost-virtualbox-guest-additions-cve-2026-21987-7.3 · Note
• https://redos.red-soft.ru/support/secure/uyazvimosti/support/secure/uyazvimosti-red-os-8-0/uyazvimost-virtualbox-guest-additions-cve-2026-21987-8.0 · Note
• https://redos.red-soft.ru/support/secure/uyazvimosti/support/secure/uyazvimosti/uyazvimost-virtualbox-cve-2026-21987-7.3 · Note
• https://cybersecurity-help.cz/vdb/SB20260120194 · Note
• https://t.me/CVEtracker/42642 · Telegram Post