CVE-2021-43522 json
An issue was discovered in Insyde InsydeH2O with kernel 5.1 through 2021-11-08, 5.2 through 2021-11-08, and 5.3 through 2021-11-08.
published 2022-02-02 4 y ago modified 2026-08-11 2 mo ago also EUVD-2021-30451
- cvss
- 7.5
- 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 18%
- public exploits
- 0
- none known
Summary
An issue was discovered in Insyde InsydeH2O with kernel 5.1 through 2021-11-08, 5.2 through 2021-11-08, and 5.3 through 2021-11-08. A StorageSecurityCommandDxe SMM memory corruption vulnerability allows an attacker to write fixed or predictable data to SMRAM. Exploiting this issue could lead to escalating privileges to SMM.
Patch / fix
- Siemens RUGGEDCOM APE1808 - BIOS V1.0.202N
- 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
0.26% chance of exploitation in the next 30 days, higher than 18% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H |
| NVD | 2.0 | 6.9 | AV:L/AC:M/Au:N/C:C/I:C/A:C |
Affected products
- Siemens RUGGEDCOM APE1808 - BIOS
- 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-787 Out-of-bounds Write
References
-
insyde.com
/security-pledge
vendor-advisory
-
security.netapp.com
/advisory/ntap-20220216-0003/
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-2021-43522
- NVD CVE-2021-43522
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