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CVE-2017-5731

21
FAUCET Score

CVE-2017-5731 describes a bounds checking vulnerability in Tianocore EDK2 (specifically Tianocompress before November 7, 2017) that could allow an authenticated local user to escalate privileges. With a CVSS score of 7.8 (HIGH), this vulnerability has a low attack complexity and requires local access and user privileges, but can lead to high impacts on confidentiality, integrity, and availability. Despite its severity, there is no known public exploit code (Metasploit, Nuclei, ExploitDB) and no evidence of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
< 2017-11-07CPE matchmatch criteria
cpe:2.3:a:tianocore:edk2:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.40%
Probability of exploitation in next 30 days
EPSS Percentile
32.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0040 is in the 72nd percentile among its peer group of 17,061 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: ovmf-0:20180508-6.gitee3198e672e2.el7
View patch

Vendor Advisories (1)

redhatCVE-2017-5731Moderate

edk2: Privilege escalation via processing of malformed files in TianoCompress.c

Oct 16, 2018

References

bugzilla.tianocore.org / show_bug.cgi
Issue TrackingPatchVendor Advisory