CVE-2023-39281

criticalpriority · track · 39EPSS 0.005 · 42 %ileDEEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.49% (42nd) EPSS

CVSS 9.8 · critical

Is it mine?

14 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-27

A stack buffer overflow vulnerability discovered in AsfSecureBootDxe in Insyde InsydeH2O with kernel 5.0 through 5.5 allows attackers to run arbitrary code execution during the DXE phase.

cvss

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

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–critical · 5.7–9.8

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.15.7mediumCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:Nsecondary · ENISA EU

v3.15.7mediumCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:Nsecondaryexploitability 0.5 · impact 5.2

v3.19criticalCVSS:3.1/AV:N/AC:L/PR:N/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-787USprimaryCWE-121US

affected products (14)

Products and version ranges known to be affected.

Insyde UEFI Firmwareall versionscert_bundDEcpe:/h:insyde:uefi:-
Lenovo BIOSall versionscert_bundDEcpe:/h:lenovo:bios:-
n/a n/a≤ n/aenisa_euvdEU
insyde insydeh2o= 05.42.37.0031nvdUScpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:*
insyde insydeh2o= 05.43.06.0021nvdUScpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:*
insyde insydeh2o= 05.44.30.0022nvdUScpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:*
insyde insydeh2o= 05.44.34.0055nvdUScpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:*
insyde insydeh2o= 05.44.45.0017nvdUScpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:*
insyde insydeh2o= 05.45.24.0039nvdUScpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:*
insyde insydeh2o= 05.45.38.0005nvdUScpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:*
insyde insydeh2o= 05.53.22.0008nvdUScpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:*
insyde insydeh2o= 05.53.23.0011nvdUScpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:*
insyde insydeh2o= 05.53.23.0014nvdUScpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:*
insyde insydeh2o= 05.53.28.0013nvdUScpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2024-0609Insyde UEFI Firmware und Lenovo BIOS: Mehrere SchwachstellenDeutsch2024-03-12csaf · cert_bundDE
Ein lokaler Angreifer kann mehrere Schwachstellen in Insyde UEFI Firmware und Lenovo BIOS ausnutzen, um Dateien zu manipulieren, beliebigen Code auszuführen oder seine Privilegien zu erweitern.

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 2023-11-01modified 2026-06-17

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+16125 more

references (7)

External citations — patches, advisories, analysis.

scry

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