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Fencer Intel
high 7.0

CVE-2022-32477 json

An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5.

published 3y ago modified 4mo ago also EUVD-2022-35549

cvss
7.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 2%
public exploits
0
none known

Summary

An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. DMA attacks on the FvbServicesRuntimeDxe shared buffer used by SMM and non-SMM code could cause TOCTOU race-condition issues that could lead to corruption of SMRAM and escalation of privileges. This attack can be mitigated using IOMMU protection for the ACPI runtime memory used for the command buffer. This attack can be mitigated by copying the firmware block services data to SMRAM before checking it.

Patch / fix

  • insyde insydeh2o 5.2.05.27.27, 5.3.05.36.27, 5.4.05.44.27, 5.5.05.52.27

Is CVE-2022-32477 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-23-257-04 updated cvss 8.2

Siemens RUGGEDCOM APE1808 Products

  • Siemens RUGGEDCOM APE1808 ADM (6GK6015-0AL20-0GL0) <BIOS_V1.0.212N Siemens RUGGEDCOM APE1808 ADM CC (6GK6015-0AL20-0GL1) <BIOS_V1.0.212N Siemens RUGGEDCOM APE1808 CKP (6GK6015-0AL20-0GK0) <BIOS_V1.0.212N Siemens RUGGEDCOM APE1808 CKP CC (6GK6015-0AL20-0GK1) <BIOS_V1.0.212N Siemens RUGGEDCOM APE1808 CLOUDCONNECT (6GK6015-0AL20-0GM0) <BIOS_V1.0.212N Siemens RUGGEDCOM APE1808 CLOUDCONNECT CC (6GK6015-0AL20-0GM1) <BIOS_V1.0.212N
    +16 more products
    Siemens RUGGEDCOM APE1808 ELAN (6GK6015-0AL20-0GP0) <BIOS_V1.0.212N Siemens RUGGEDCOM APE1808 ELAN CC (6GK6015-0AL20-0GP1) <BIOS_V1.0.212N Siemens RUGGEDCOM APE1808 SAM-L (6GK6015-0AL20-0GN0) <BIOS_V1.0.212N Siemens RUGGEDCOM APE1808 SAM-L CC (6GK6015-0AL20-0GN1) <BIOS_V1.0.212N Siemens RUGGEDCOM APE1808CLA-P (6GK6015-0AL20-1AA0) <BIOS_V1.0.212N Siemens RUGGEDCOM APE1808CLA-P CC (6GK6015-0AL20-1AA1) <BIOS_V1.0.212N Siemens RUGGEDCOM APE1808CLA-S1 (6GK6015-0AL20-1AB0) <BIOS_V1.0.212N Siemens RUGGEDCOM APE1808CLA-S1 CC (6GK6015-0AL20-1AB1) <BIOS_V1.0.212N Siemens RUGGEDCOM APE1808CLA-S3 (6GK6015-0AL20-1AD0) <BIOS_V1.0.212N Siemens RUGGEDCOM APE1808CLA-S3 CC (6GK6015-0AL20-1AD1) <BIOS_V1.0.212N Siemens RUGGEDCOM APE1808CLA-S5 (6GK6015-0AL20-1AF0) <BIOS_V1.0.212N Siemens RUGGEDCOM APE1808CLA-S5 CC (6GK6015-0AL20-1AF1) <BIOS_V1.0.212N Siemens RUGGEDCOM APE1808LNX (6GK6015-0AL20-0GH0) <BIOS_V1.0.212N Siemens RUGGEDCOM APE1808LNX CC (6GK6015-0AL20-0GH1) <BIOS_V1.0.212N Siemens RUGGEDCOM APE1808W10 (6GK6015-0AL20-0GJ0) <BIOS_V1.0.212N Siemens RUGGEDCOM APE1808W10 CC (6GK6015-0AL20-0GJ1) <BIOS_V1.0.212N
    affected: fixed in V1.0.212N support.industry.siemens.com

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
last yr.

Exploit prediction

0.13% chance of exploitation in the next 30 days, higher than 2% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Classification

Weakness
  • CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.