CVE-2022-33986

mediumpriority · track · 26EPSS 0.001 · 3 %ileDEEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.14% (3rd) EPSS

CVSS 6.4 · medium

Is it mine?

5 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-27

DMA attacks on the parameter buffer used by the VariableRuntimeDxe software SMI handler could lead to a TOCTOU attack. DMA attacks on the parameter buffer used by the software SMI handler used by the driver VariableRuntimeDxe could lead to a TOCTOU attack on the SMI handler and lead to corruption of SMRAM. This issue was discovered by Insyde engineering during a security review. This issue is fixed in Kernel 5.4: 05.44.23 and Kernel 5.5: 05.52.23. CWE-367 CWE-367 Report at: https://www.insyde.com/security-pledge/SA-2022056

cvss

Technical severity, 0–10. One row per scoring source.

6.4

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.16.4mediumCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 0.5 · impact 5.9

v3.16.4mediumCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.16.4mediumCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:Hsecondaryexploitability 0.5 · impact 5.9

v3.15.9mediumCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-367USprimary

affected products (5)

Products and version ranges known to be affected.

HP Computerall versionscert_bundDEcpe:/h:hp:computer:-
Insyde UEFI Firmwareall versionscert_bundDEcpe:/h:insyde:uefi:-
n/a n/a≤ n/aenisa_euvdEU
insyde kernel5.4 → 5.4.05.44.23nvdUScpe:2.3:a:insyde:kernel:*:*:*:*:*:*:*:*
insyde kernel5.5 → 5.5.05.52.23nvdUScpe:2.3:a:insyde:kernel:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-0706Insyde UEFI Firmware: Mehrere SchwachstellenDeutsch2023-03-21csaf · cert_bundDE
Ein lokaler Angreifer kann mehrere Schwachstellen in der Insyde UEFI Firmware ausnutzen, um beliebigen Code auszuführen, Informationen offenzulegen oder einen Denial of Service zu verursachen.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund nvd NVD CVE.org MITRE

published 2022-11-15modified 2026-06-17

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+1056 more

references (8)

External citations — patches, advisories, analysis.

scry

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