CVE-2020-8745

Insufficient control flow management in subsystem for Intel(R) CSME versions before 11.8.80, 11.12.80, 11.22.80, 12.0.70, 13.0.40, 13.30.10, 14.0.45 and 14.5.25 , Intel(R) TXE versions before 3.1.80 and 4.0.30 may allow an unauthenticated user to potentially enable escalation of privilege via physical access.

Published: 2020-11-12 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-8745 is rated Low Risk (37.2/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.38%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

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-2020-8745

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 0.65% 0.38% -0.27%
2 2025-11-21 0.23% 0.65% +0.41%
3 2025-11-18 — 0.23% —

Full EPSS history (15 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-8745

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.8 3.1 MEDIUM
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:P)
Hands-on access—USB, keyboard, opening the case—not something you do purely over the wire.
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:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
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.
 0.9 5.9 [email protected]
4.6 2.0 MEDIUM
AV:L/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 3.9 6.4 [email protected]

Weakness enumeration for CVE-2020-8745

Affected software / configurations for CVE-2020-8745

Vendor Product Version Raw CPE
intel converged_security_and_manageability_engine < 11.8.80 cpe:2.3:a:intel:converged_security_and_manageability_engine:*:*:*:*:*:*:*:*
intel converged_security_and_manageability_engine >= 11.12.0, < 11.12.80 cpe:2.3:a:intel:converged_security_and_manageability_engine:*:*:*:*:*:*:*:*
intel converged_security_and_manageability_engine >= 11.22.0, < 11.22.80 cpe:2.3:a:intel:converged_security_and_manageability_engine:*:*:*:*:*:*:*:*
intel converged_security_and_manageability_engine >= 12.0, < 12.0.70 cpe:2.3:a:intel:converged_security_and_manageability_engine:*:*:*:*:*:*:*:*
intel converged_security_and_manageability_engine >= 14.0, < 14.0.45 cpe:2.3:a:intel:converged_security_and_manageability_engine:*:*:*:*:*:*:*:*
intel converged_security_and_manageability_engine >= 14.5.0, < 14.5.25 cpe:2.3:a:intel:converged_security_and_manageability_engine:*:*:*:*:*:*:*:*
intel trusted_execution_technology < 3.1.80 cpe:2.3:a:intel:trusted_execution_technology:*:*:*:*:*:*:*:*
intel trusted_execution_technology >= 4.0, < 4.0.30 cpe:2.3:a:intel:trusted_execution_technology:*:*:*:*:*:*:*:*
siemens simatic_drive_controller_firmware < 05.00.01.00 cpe:2.3:o:siemens:simatic_drive_controller_firmware:*:*:*:*:*:*:*:*
siemens simatic_et200sp_1515sp_pc2_firmware < 0209.0105 cpe:2.3:o:siemens:simatic_et200sp_1515sp_pc2_firmware:*:*:*:*:*:*:*:*
siemens simatic_field_pg_m5_firmware < 22.01.08 cpe:2.3:o:siemens:simatic_field_pg_m5_firmware:*:*:*:*:*:*:*:*
siemens simatic_field_pg_m6_firmware — cpe:2.3:o:siemens:simatic_field_pg_m6_firmware:-:*:*:*:*:*:*:*
siemens simatic_ipc127e_firmware < 27.01.05 cpe:2.3:o:siemens:simatic_ipc127e_firmware:*:*:*:*:*:*:*:*
siemens simatic_ipc427e_firmware < 27.01.05 cpe:2.3:o:siemens:simatic_ipc427e_firmware:*:*:*:*:*:*:*:*
siemens simatic_ipc477e_firmware < 21.01.15 cpe:2.3:o:siemens:simatic_ipc477e_firmware:*:*:*:*:*:*:*:*
siemens simatic_ipc527g_firmware < 1.4.0 cpe:2.3:o:siemens:simatic_ipc527g_firmware:*:*:*:*:*:*:*:*
siemens simatic_ipc547g_firmware < r1.30.0 cpe:2.3:o:siemens:simatic_ipc547g_firmware:*:*:*:*:*:*:*:*
siemens simatic_ipc627e_firmware < 25.02.08 cpe:2.3:o:siemens:simatic_ipc627e_firmware:*:*:*:*:*:*:*:*
siemens simatic_ipc647e_firmware < 25.02.08 cpe:2.3:o:siemens:simatic_ipc647e_firmware:*:*:*:*:*:*:*:*
siemens simatic_ipc667e_firmware < 25.02.08 cpe:2.3:o:siemens:simatic_ipc667e_firmware:*:*:*:*:*:*:*:*
siemens simatic_ipc847e_firmware < 25.02.08 cpe:2.3:o:siemens:simatic_ipc847e_firmware:*:*:*:*:*:*:*:*
siemens simatic_itp1000_firmware < 23.01.08 cpe:2.3:o:siemens:simatic_itp1000_firmware:*:*:*:*:*:*:*:*
siemens sinumerik_828d_hw_pu.4_firmware < 08.00.00.00 cpe:2.3:o:siemens:sinumerik_828d_hw_pu.4_firmware:*:*:*:*:*:*:*:*
siemens sinumerik_mc_mcu_1720_firmware < 05.00.00.00 cpe:2.3:o:siemens:sinumerik_mc_mcu_1720_firmware:*:*:*:*:*:*:*:*
siemens sinumerik_one_firmware — cpe:2.3:o:siemens:sinumerik_one_firmware:-:*:*:*:*:*:*:*
siemens sinumerik_840d_sl_ht_10_firmware — cpe:2.3:o:siemens:sinumerik_840d_sl_ht_10_firmware:-:*:*:*:*:*:*:*
siemens sinumerik_one_ncu_1740_firmware < 04.00.00.00 cpe:2.3:o:siemens:sinumerik_one_ncu_1740_firmware:*:*:*:*:*:*:*:*
siemens sinumerik_one_ppu_1740_firmware < 06.00.00.00 cpe:2.3:o:siemens:sinumerik_one_ppu_1740_firmware:*:*:*:*:*:*:*:*

References for CVE-2020-8745

cvelogic Threat Intelligence