VulnerabilityModified

CVE-2015-2552

HIGH 7.2EPSS 1.67%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (1.67%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

The kernel in Microsoft Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT Gold and 8.1, and Windows 10 allows physically proximate attackers to bypass the Trusted Boot protection mechanism, and consequently interfere with the integrity of code, BitLocker, Device Encryption, and Device Health Attestation, via a crafted Boot Configuration Data (BCD) setting, aka "Trusted Boot Security Feature Bypass Vulnerability."

CVSS 2.0: 7.2 HIGHAV:L/AC:L/Au:N/C:C/I:C/A:C
EPSS: 1.67% probability · 75th percentile
CISA KEV: Not listed
Weakness: CWE-254
Affected: microsoft/windows 10 · microsoft/windows 7 · microsoft/windows 8 · microsoft/windows 8.1 · microsoft/windows rt · microsoft/windows rt 8.1 · microsoft/windows server 2008 · microsoft/windows server 2012 · microsoft/windows vista
Source: secure@microsoft.com

References

http://packetstormsecurity.com/files/133962/Microsoft-Trusted-Boot-Security-Feature-Bypass.htmlExploit, Third Party Advisory, VDB Entry
http://www.securityfocus.com/archive/1/536678/100/0/threadedThird Party Advisory, VDB Entry
http://www.securitytracker.com/id/1033805Third Party Advisory, VDB Entry
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-111Patch, Vendor Advisory
http://packetstormsecurity.com/files/133962/Microsoft-Trusted-Boot-Security-Feature-Bypass.htmlExploit, Third Party Advisory, VDB Entry
http://www.securityfocus.com/archive/1/536678/100/0/threadedThird Party Advisory, VDB Entry
http://www.securitytracker.com/id/1033805Third Party Advisory, VDB Entry
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-111Patch, Vendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.