PT-2026-3737 · Oracle+1 · Virtualbox+1

Fstmpr · CVE-2026-21990 · Published 2026-01-01 · Updated 2026-05-12

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 Core component, potentially allowing a high-privileged attacker with access to the system where Oracle VM VirtualBox runs to take control of it. Successful exploitation can lead to a complete takeover of Oracle VM VirtualBox and may significantly impact other products.

Recommendations Update Oracle VM VirtualBox to a version newer than 7.2.4. Update Oracle VM VirtualBox to a version newer than 7.1.14.

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2026-00839

CVE-2026-21990

Affected Products

Virtualbox

Red Os

References · 18

• https://oracle.com/security-alerts/cpujan2026.html · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-21990 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-21990 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-21990 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-21990 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-21990 · Security Note
• https://bdu.fstec.ru/vul/2026-00839 · Security Note
• https://twitter.com/VulmonFeeds/status/2013792756104036679 · Twitter Post
• https://redos.red-soft.ru/support/secure/uyazvimosti/support/secure/uyazvimosti/uyazvimost-virtualbox-cve-2026-21990-7.3 · Note
• https://twitter.com/CVEnew/status/2013740391879614947 · Twitter Post
• https://redos.red-soft.ru/support/secure/uyazvimosti/support/secure/uyazvimosti-red-os-8-0/uyazvimost-virtualbox-kmod-cve-2026-21990-8.0 · Note
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-21990 · Note
• https://redos.red-soft.ru/search/?iblock_id=24&q=CVE-2026-21990 · Note
• https://redos.red-soft.ru/support/secure/uyazvimosti/support/secure/uyazvimosti/uyazvimost-virtualbox-guest-additions-cve-2026-21990-7.3 · Note
• https://t.me/CVEtracker/42645 · Telegram Post