// For flags

CVE-2020-5953

 

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

A vulnerability exists in System Management Interrupt (SWSMI) handler of InsydeH2O UEFI Firmware code located in SWSMI handler that dereferences gRT (EFI_RUNTIME_SERVICES) pointer to call a GetVariable service, which is located outside of SMRAM. This can result in code execution in SMM (escalating privilege from ring 0 to ring -2).

Se presenta una vulnerabilidad en el manejador de Interrupciones de administración del Sistema (SWSMI) del código del Firmware UEFI de InsydeH2O ubicado en el manejador SWSMI que desreferencia el puntero gRT (EFI_RUNTIME_SERVICES) para llamar a un servicio GetVariable, que es encontrado fuera de la SMRAM. Esto puede resultar en una ejecución de código en SMM (escalando el privilegio del anillo 0 al anillo -2)

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
High
Privileges Required
High
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
Medium
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2020-01-06 CVE Reserved
  • 2022-02-03 CVE Published
  • 2023-09-24 EPSS Updated
  • 2024-08-04 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Siemens
Search vendor "Siemens"
Ruggedcom Ape1808 Firmware
Search vendor "Siemens" for product "Ruggedcom Ape1808 Firmware"
--
Affected
in Siemens
Search vendor "Siemens"
Ruggedcom Ape1808
Search vendor "Siemens" for product "Ruggedcom Ape1808"
--
Safe
Siemens
Search vendor "Siemens"
Simatic Field Pg M6 Firmware
Search vendor "Siemens" for product "Simatic Field Pg M6 Firmware"
--
Affected
in Siemens
Search vendor "Siemens"
Simatic Field Pg M6
Search vendor "Siemens" for product "Simatic Field Pg M6"
--
Safe
Siemens
Search vendor "Siemens"
Simatic Ipc127e Firmware
Search vendor "Siemens" for product "Simatic Ipc127e Firmware"
--
Affected
in Siemens
Search vendor "Siemens"
Simatic Ipc127e
Search vendor "Siemens" for product "Simatic Ipc127e"
--
Safe
Siemens
Search vendor "Siemens"
Simatic Ipc227g Firmware
Search vendor "Siemens" for product "Simatic Ipc227g Firmware"
--
Affected
in Siemens
Search vendor "Siemens"
Simatic Ipc227g
Search vendor "Siemens" for product "Simatic Ipc227g"
--
Safe
Siemens
Search vendor "Siemens"
Simatic Ipc277g Firmware
Search vendor "Siemens" for product "Simatic Ipc277g Firmware"
--
Affected
in Siemens
Search vendor "Siemens"
Simatic Ipc277g
Search vendor "Siemens" for product "Simatic Ipc277g"
--
Safe
Siemens
Search vendor "Siemens"
Simatic Itp1000 Firmware
Search vendor "Siemens" for product "Simatic Itp1000 Firmware"
--
Affected
in Siemens
Search vendor "Siemens"
Simatic Itp1000
Search vendor "Siemens" for product "Simatic Itp1000"
--
Safe
Siemens
Search vendor "Siemens"
Simatic Ipc477e Pro Firmware
Search vendor "Siemens" for product "Simatic Ipc477e Pro Firmware"
--
Affected
in Siemens
Search vendor "Siemens"
Simatic Ipc477e Pro
Search vendor "Siemens" for product "Simatic Ipc477e Pro"
--
Safe
Siemens
Search vendor "Siemens"
Simatic Ipc627e Firmware
Search vendor "Siemens" for product "Simatic Ipc627e Firmware"
--
Affected
in Siemens
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Simatic Ipc627e
Search vendor "Siemens" for product "Simatic Ipc627e"
--
Safe
Siemens
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Simatic Ipc647e Firmware
Search vendor "Siemens" for product "Simatic Ipc647e Firmware"
--
Affected
in Siemens
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Simatic Ipc647e
Search vendor "Siemens" for product "Simatic Ipc647e"
--
Safe
Siemens
Search vendor "Siemens"
Simatic Ipc677e Firmware
Search vendor "Siemens" for product "Simatic Ipc677e Firmware"
--
Affected
in Siemens
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Simatic Ipc677e
Search vendor "Siemens" for product "Simatic Ipc677e"
--
Safe
Siemens
Search vendor "Siemens"
Simatic Ipc847e Firmware
Search vendor "Siemens" for product "Simatic Ipc847e Firmware"
--
Affected
in Siemens
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Simatic Ipc847e
Search vendor "Siemens" for product "Simatic Ipc847e"
--
Safe
Siemens
Search vendor "Siemens"
Simatic Ipc327g Firmware
Search vendor "Siemens" for product "Simatic Ipc327g Firmware"
--
Affected
in Siemens
Search vendor "Siemens"
Simatic Ipc327g
Search vendor "Siemens" for product "Simatic Ipc327g"
--
Safe
Siemens
Search vendor "Siemens"
Simatic Ipc377g Firmware
Search vendor "Siemens" for product "Simatic Ipc377g Firmware"
--
Affected
in Siemens
Search vendor "Siemens"
Simatic Ipc377g
Search vendor "Siemens" for product "Simatic Ipc377g"
--
Safe
Siemens
Search vendor "Siemens"
Simatic Ipc427e Firmware
Search vendor "Siemens" for product "Simatic Ipc427e Firmware"
--
Affected
in Siemens
Search vendor "Siemens"
Simatic Ipc427e
Search vendor "Siemens" for product "Simatic Ipc427e"
--
Safe
Siemens
Search vendor "Siemens"
Simatic Ipc477e Firmware
Search vendor "Siemens" for product "Simatic Ipc477e Firmware"
--
Affected
in Siemens
Search vendor "Siemens"
Simatic Ipc477e
Search vendor "Siemens" for product "Simatic Ipc477e"
--
Safe
Siemens
Search vendor "Siemens"
Simatic Field Pg M5 Firmware
Search vendor "Siemens" for product "Simatic Field Pg M5 Firmware"
--
Affected
in Siemens
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Simatic Field Pg M5
Search vendor "Siemens" for product "Simatic Field Pg M5"
--
Safe
Insyde
Search vendor "Insyde"
Insydeh2o
Search vendor "Insyde" for product "Insydeh2o"
5.12.09.0074
Search vendor "Insyde" for product "Insydeh2o" and version "5.12.09.0074"
-
Affected
Insyde
Search vendor "Insyde"
Insydeh2o
Search vendor "Insyde" for product "Insydeh2o"
5.23.04.0045
Search vendor "Insyde" for product "Insydeh2o" and version "5.23.04.0045"
-
Affected
Insyde
Search vendor "Insyde"
Insydeh2o
Search vendor "Insyde" for product "Insydeh2o"
5.23.45.0023
Search vendor "Insyde" for product "Insydeh2o" and version "5.23.45.0023"
-
Affected
Insyde
Search vendor "Insyde"
Insydeh2o
Search vendor "Insyde" for product "Insydeh2o"
5.33.15.0034
Search vendor "Insyde" for product "Insydeh2o" and version "5.33.15.0034"
-
Affected
Insyde
Search vendor "Insyde"
Insydeh2o
Search vendor "Insyde" for product "Insydeh2o"
5.34.03.0029
Search vendor "Insyde" for product "Insydeh2o" and version "5.34.03.0029"
-
Affected
Insyde
Search vendor "Insyde"
Insydeh2o
Search vendor "Insyde" for product "Insydeh2o"
5.42.03.0010
Search vendor "Insyde" for product "Insydeh2o" and version "5.42.03.0010"
-
Affected