What is CVE-2017-5731?

CVE-2017-5731 is a high-severity vulnerability in Tianocore Edk2, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.8/10. Published 2019-10-28.

How severe is CVE-2017-5731?

High severity. CVSS v3 base score is 7.8 out of 10.

Buffer overflow in Tianocore Edk2

CVE-2017-5731

Bounds checking in Tianocompress before November 7, 2017 may allow an authenticated user to potentially enable an escalation of privilege via local access.

Vulnerability class: Buffer Overflow

Published 2019-10-28 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (30.8th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 30.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: -0.000

Affected products

Tianocore Edk2
Tianocore — versions before November 7, 2017

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

References

bugzilla.tianocore.org/show_bug.cgi (Patch, Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2017-5731?: CVE-2017-5731 is a high-severity vulnerability in Tianocore Edk2, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.8/10. Published 2019-10-28.
How severe is CVE-2017-5731?: High severity. CVSS v3 base score is 7.8 out of 10.