PT-2026-3735 · Oracle+1 · Virtualbox+1

Zhenghao Li · Published 2026-01-01 · Updated 2026-05-12 · CVE-2026-21988

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 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

Protection Mechanism Failure

Weakness Enumeration

CWE-693

Related Identifiers

BDU:2026-00785

CVE-2026-21988

Affected Products

Virtualbox

Red Os

References · 18

• https://oracle.com/security-alerts/cpujan2026.html · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-21988 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-21988 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-21988 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-21988 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-21988 · Security Note
• https://bdu.fstec.ru/vul/2026-00785 · Security Note
• https://redos.red-soft.ru/support/secure/uyazvimosti/support/secure/uyazvimosti-red-os-8-0/uyazvimost-virtualbox-kmod-cve-2026-21988-8.0 · Note
• https://twitter.com/CVEnew/status/2013740394182320535 · Twitter Post
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-21988 · Note
• https://twitter.com/VulmonFeeds/status/2013797874807513155 · Twitter Post
• https://t.me/CVEtracker/42643 · Telegram Post
• https://redos.red-soft.ru/support/secure/uyazvimosti/support/secure/uyazvimosti/uyazvimost-virtualbox-cve-2026-21988-7.3 · Note
• https://twitter.com/TheHackerWire/status/2013740345461297164 · Twitter Post
• https://redos.red-soft.ru/search/?iblock_id=24&q=CVE-2026-21988 · Note