What is CVE-2008-3893?

CVE-2008-3893 is a medium-severity vulnerability in Microsoft Windows Vista, classified under Information Disclosure. CVSS score: 5.5/10. Published 2008-09-03.

How severe is CVE-2008-3893?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Information disclosure in Microsoft Windows Vista

CVE-2008-3893

Microsoft Bitlocker in Windows Vista before SP1 stores pre-boot authentication passwords in the BIOS Keyboard buffer and does not clear this buffer during boot, which allows local users to obtain sensitive information by reading the physical memory locations associated with this buffer.

Vulnerability class: Information Disclosure

Published 2008-09-03 · last modified 2026-06-16.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.015 (73.3th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 73rd percentile — 73.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000

Affected products

Microsoft Windows Vista

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

secunia.com/advisories/31619 (Vendor Advisory, third-party-advisory)
www.ivizsecurity.com/security-advisory-iviz-sr-0801.html

Frequently asked questions

What is CVE-2008-3893?: CVE-2008-3893 is a medium-severity vulnerability in Microsoft Windows Vista, classified under Information Disclosure. CVSS score: 5.5/10. Published 2008-09-03.
How severe is CVE-2008-3893?: Medium severity. CVSS v3 base score is 5.5 out of 10.