CVE-2021-41840 json
An issue was discovered in NvmExpressDxe in the kernel 5.0 through 5.5 in Insyde InsydeH2O.
published 2022-02-03 4 y ago modified 2026-08-11 2 mo ago also EUVD-2021-28841
- cvss
- 8.2
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 23%
- public exploits
- 0
- none known
Summary
An issue was discovered in NvmExpressDxe in the kernel 5.0 through 5.5 in Insyde InsydeH2O. There is an SMM callout that allows an attacker to access the System Management Mode and execute arbitrary code. This occurs because of Inclusion of Functionality from an Untrusted Control Sphere.
Patch / fix
- Siemens SIMATIC Field PG M5 V22.01.10
- Siemens SIMATIC Field PG M6 V26.01.13
- Siemens SIMATIC IPC127E V27.01.09
- Siemens SIMATIC IPC227G V28.01.04
- Siemens SIMATIC IPC277G V28.01.04
- Siemens SIMATIC IPC277G PRO V28.01.04
- Siemens SIMATIC IPC327G V28.01.04
- Siemens SIMATIC IPC377G V28.01.04
- Siemens SIMATIC IPC427E V21.01.17
- Siemens SIMATIC IPC477E V21.01.17
- Siemens SIMATIC IPC477E PRO V21.01.17
- Siemens SIMATIC IPC627E V25.02.12
- Siemens SIMATIC IPC647E V25.02.12
- Siemens SIMATIC IPC677E V25.02.12
- Siemens SIMATIC IPC847E V25.02.12
- Siemens SIMATIC ITP1000 V23.01.10
- Siemens SIPLUS IPC427E V21.01.17
Exploit prediction
0.30% chance of exploitation in the next 30 days, higher than 23% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 8.2 | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H |
| NVD | 2.0 | 7.2 | AV:L/AC:L/Au:N/C:C/I:C/A:C |
Affected products
- Siemens SIMATIC Field PG M5
- Siemens SIMATIC Field PG M6
- Siemens SIMATIC IPC127E
- Siemens SIMATIC IPC227G
- Siemens SIMATIC IPC277G
- Siemens SIMATIC IPC277G PRO
- Siemens SIMATIC IPC327G
- Siemens SIMATIC IPC377G
- Siemens SIMATIC IPC427E
- Siemens SIMATIC IPC477E
- Siemens SIMATIC IPC477E PRO
- Siemens SIMATIC IPC627E
- Siemens SIMATIC IPC647E
- Siemens SIMATIC IPC677E
- Siemens SIMATIC IPC847E
- Siemens SIMATIC ITP1000
- Siemens SIPLUS IPC427E
Classification
- Weakness
-
- CWE-770 Allocation of Resources Without Limits or Throttling
References
-
insyde.com
/security-pledge
vendor-advisory
-
insyde.com
/security-pledge/SA-2022018
vendor-advisory
-
security.netapp.com
/advisory/ntap-20220217-0014/
third-party-advisory
-
cert-portal.siemens.com
/productcert/pdf/ssa-306654.pdf
third-party-advisory
- kb.cert.org /vuls/id/796611
- cert-portal.siemens.com /productcert/html/ssa-306654.html
Sources
- CVE List CVE-2021-41840
- NVD CVE-2021-41840
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