Is CVE-2015-4856 in the CISA KEV catalog?

No. CVE-2015-4856 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2015-4856?

CVE-2015-4856 has a CVSS v2 base score of 4.9 (MEDIUM).

What is the EPSS score for CVE-2015-4856?

CVE-2015-4856 has an EPSS score of 0.40% (32th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2015-4856?

Upgrade virtualbox on debian unstable to 5.0.0-dfsg-1 or later.

CVE & CISA-KEV Catalog

CVE-2015-4856

MEDIUM

4.9

CVSS v2

NVD

Description

Unspecified vulnerability in the Oracle VM VirtualBox component in Oracle Virtualization VirtualBox before 4.0.30, 4.1.38, 4.2.30, 4.3.26, and 5.0.0 allows local users to affect availability via unknown vectors related to Core.

How to fix

Remediation Available

virtualboxDebian

Fixed in:5.0.0-dfsg-1CVE-2015-4856

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

0.40%probability of exploitation in 30 days

32ndpercentile

Low risk: more likely to be exploited than 32% of all known CVEs.

References

Patch1

oracle.com

Other references1

securitytracker.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-06.