Vulnerability · Published Oct 20, 2021 · Assigned by oracle

CVE-2021-35538

High 7.8

In plain English

A high-severity security flaw in VM VirtualBox from Oracle Corporation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 36% of all known vulnerabilities).

Severity (CVSS 3.1)7.8High

Exploit odds (30 days)0.4%top 64.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). The supported version that is affected is Prior to 6.1.28. Easily exploitable vulnerability allows low privileged attacker with logon to the infrastructure where Oracle VM VirtualBox executes to compromise Oracle VM VirtualBox. Successful attacks of this vulnerability can result in takeover of Oracle VM VirtualBox. Note: This vulnerability does not apply to Windows systems. CVSS 3.1 Base Score 7.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Ubuntu:22.04:LTS	virtualbox	no fix listed	UBUNTU-CVE-2021-35538
Ubuntu:24.04:LTS	virtualbox	no fix listed	UBUNTU-CVE-2021-35538
Ubuntu:25.10	virtualbox	no fix listed	UBUNTU-CVE-2021-35538
Ubuntu:26.04:LTS	virtualbox	no fix listed	UBUNTU-CVE-2021-35538
Ubuntu:26.10	virtualbox	no fix listed	UBUNTU-CVE-2021-35538

Affected products (as reported)

Vendor	Product	Versions
Oracle Corporation	VM VirtualBox	unspecified – before 6.1.28

References

https://www.oracle.com/security-alerts/cpuoct2021.html x_refsource_MISC
GLSA-202208-36 vendor-advisory, x_refsource_GENTOO