CVE-2017-5691

Incorrect check in Intel processors from 6th and 7th Generation Intel Core Processor Families, Intel Xeon E3-1500M v5 and v6 Product Families, and Intel Xeon E3-1200 v5 and v6 Product Families allows compromised system firmware to impact SGX security via incorrect early system state.

Published: 2017-07-26 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2017-5691 is rated Moderate Risk (61.4/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 1.44%). EPSS rose +1.03% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2017-5691

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.41% 1.44% +1.03%
2 2025-03-30 0.97% 0.41% -0.56%
3 2025-03-29 — 0.97% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2017-5691

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.0 3.0 CRITICAL
CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.3 6.0 [email protected]
9.3 2.0 HIGH
AV:N/AC:M/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 8.6 10.0 [email protected]

Weakness enumeration for CVE-2017-5691

Affected software / configurations for CVE-2017-5691

Vendor Product Version Raw CPE
intel nuc7i3bnk_bios — cpe:2.3:o:intel:nuc7i3bnk_bios:-:*:*:*:*:*:*:*
intel nuc7i5bnk_bios — cpe:2.3:o:intel:nuc7i5bnk_bios:-:*:*:*:*:*:*:*
intel nuc7i7bnh_bios — cpe:2.3:o:intel:nuc7i7bnh_bios:-:*:*:*:*:*:*:*
intel stk2mv64cc_bios — cpe:2.3:o:intel:stk2mv64cc_bios:-:*:*:*:*:*:*:*
intel stk2m3w64cc_bios — cpe:2.3:o:intel:stk2m3w64cc_bios:-:*:*:*:*:*:*:*
intel nuc6i7kyk_bios — cpe:2.3:o:intel:nuc6i7kyk_bios:-:*:*:*:*:*:*:*
intel nuc6i3syk_bios — cpe:2.3:o:intel:nuc6i3syk_bios:-:*:*:*:*:*:*:*
intel nuc6i5syk_bios — cpe:2.3:o:intel:nuc6i5syk_bios:-:*:*:*:*:*:*:*
intel r1304sposhor_bios — cpe:2.3:o:intel:r1304sposhor_bios:-:*:*:*:*:*:*:*
intel r1304sposhorr_bios — cpe:2.3:o:intel:r1304sposhorr_bios:-:*:*:*:*:*:*:*
intel r1208sposhorr_bios — cpe:2.3:o:intel:r1208sposhorr_bios:-:*:*:*:*:*:*:*
intel lr1304spcfg1r_bios — cpe:2.3:o:intel:lr1304spcfg1r_bios:-:*:*:*:*:*:*:*
intel r1208sposhor_bios — cpe:2.3:o:intel:r1208sposhor_bios:-:*:*:*:*:*:*:*
intel s1200spsr_bios — cpe:2.3:o:intel:s1200spsr_bios:-:*:*:*:*:*:*:*
intel s1200spor_bios — cpe:2.3:o:intel:s1200spor_bios:-:*:*:*:*:*:*:*
intel lr1304spcfg1_bios — cpe:2.3:o:intel:lr1304spcfg1_bios:-:*:*:*:*:*:*:*
intel s1200spl_bios — cpe:2.3:o:intel:s1200spl_bios:-:*:*:*:*:*:*:*
intel s1200spo_bios — cpe:2.3:o:intel:s1200spo_bios:-:*:*:*:*:*:*:*
intel s1200sps_bios — cpe:2.3:o:intel:s1200sps_bios:-:*:*:*:*:*:*:*
intel r1304sposhbn_bios — cpe:2.3:o:intel:r1304sposhbn_bios:-:*:*:*:*:*:*:*
intel s1200splr_bios — cpe:2.3:o:intel:s1200splr_bios:-:*:*:*:*:*:*:*
intel r1304sposhbnr_bios — cpe:2.3:o:intel:r1304sposhbnr_bios:-:*:*:*:*:*:*:*

References for CVE-2017-5691

cvelogic Threat Intelligence