Oracle VirtualBox

CVE-2008-3431: Oracle VirtualBox Insufficient Input Validation Vulnerability

Is it exploited?

Yes. CISA added it to the Known Exploited Vulnerabilities catalog on 3 Mar 2022, 4,958 days after the CVE record was published.

How likely is exploitation in the next 30 days?

6.9%

EPSS score, percentile 94 of all scored records

How severe?

8.8 High

CVSS v3.1 base score, from CISA's enrichment of the record

What should I do?

CISA deadline 24 Mar 2022. Apply updates per vendor instructions.

Advisories and patches (1)

Which versions are affected?

Not stated. The CVE record gives vendor and product as “n/a” and the version as “unspecified”.

Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of 28 Oct 2026; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.

What to do

Required action, set by CISA

Apply updates per vendor instructions.

CISA due date for this action: 24 March 2022.

Advisories and patches

240095 (Vendor advisory)

Linked from CISA's catalog entry

https://nvd.nist.gov/vuln/detail/CVE-2008-3431

Affected products and versions

The CVE record does not name affected products or versions: vendor and product are “n/a” and the version is “unspecified”.

Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.

About this vulnerability

An input validation vulnerability exists in the VBoxDrv.sys driver of Sun xVM VirtualBox which allows attackers to locally execute arbitrary code.

Summary: CISA's KEV catalog, as of 28 Oct 2026.

CISA added CVE-2008-3431 to its Known Exploited Vulnerabilities (KEV) catalog on 3 Mar 2022.
CISA's ransomware flag for this entry is "Unknown": no evidence of ransomware use in the catalog, which is not proof of none.
The due date CISA sets for the required action is 24 Mar 2022.
The CVE record was published on 5 Aug 2008, 4,958 days before it was added to KEV.
The CVE record carries a CVSS v3.1 base score of 8.8 (High), taken from CISA's enrichment of the record.
FIRST's EPSS model puts the probability of exploitation in the next 30 days at 6.9% (percentile 94), as of 28 Oct 2026.
CISA's SSVC assessment in the CVE record: exploitation active, automatable no, technical impact total.

Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026. About the data.

Description

The VBoxDrvNtDeviceControl function in VBoxDrv.sys in Sun xVM VirtualBox before 1.6.4 uses the METHOD_NEITHER communication method for IOCTLs and does not properly validate a buffer associated with the Irp object, which allows local users to gain privileges by opening the \\.\VBoxDrv device and calling DeviceIoControl to send a crafted kernel address.

Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.

Weakness

CWE-264

CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record and the KEV entry.

Timeline

Date	Event
5 Aug 2008	CVE record published
3 Mar 2022	Added to CISA KEV
24 Mar 2022	CISA due date for the required action
22 Oct 2025	CVE record last updated

References

4107 (Third-party advisory)
31361 (Third-party advisory)
6218 (Exploit)
30481 (Vulnerability database)
sun-xvmvirtualbox-privilege-escalation(44202) (Vulnerability database)
ADV-2008-2293 (Vulnerability database)
1020625 (Vulnerability database)
coresecurity.com
virtualbox.org
20080804 CORE-2008-0716 - Sun xVM VirtualBox Privilege Escalation Vulnerability

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