CVE-2022-28806

Name: CVE-2022-28806
Creator: NVD / NIST
Published: 2022-05-04T15:15:13.083+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.45%

Last modified Jun 17, 2026

CVE-2022-28806 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. An issue was discovered on certain Fujitsu LIEFBOOK devices (A3510, U9310, U7511/U7411/U7311, U9311, E5510/E5410, U7510/U7410/U7310, E459/E449) with BIOS versions before v1.09 (A3510), v2.17 (U9310), v2.30 (U7511/U7411/U7311), v2.33 (U9311), v2.23 (E5510), v2.19 (U7510/U7410), v2.13 (U7310), and v1.09 (E459/E449). The FjGabiFlashCoreAbstractionSmm driver registers a Software System Management Interrupt (SWSMI) handler that is not sufficiently validated to ensure that the CommBuffer (or any other communication buffer's nested contents) are not pointing to SMRAM contents. EPSS estimates a 0.45% chance of exploitation in the next 30 days.

Description

An issue was discovered on certain Fujitsu LIEFBOOK devices (A3510, U9310, U7511/U7411/U7311, U9311, E5510/E5410, U7510/U7410/U7310, E459/E449) with BIOS versions before v1.09 (A3510), v2.17 (U9310), v2.30 (U7511/U7411/U7311), v2.33 (U9311), v2.23 (E5510), v2.19 (U7510/U7410), v2.13 (U7310), and v1.09 (E459/E449). The FjGabiFlashCoreAbstractionSmm driver registers a Software System Management Interrupt (SWSMI) handler that is not sufficiently validated to ensure that the CommBuffer (or any other communication buffer's nested contents) are not pointing to SMRAM contents. A potential attacker can therefore write fixed data to SMRAM, which could lead to data corruption inside this memory (e.g., change the SMI handler's code or modify SMRAM map structures to break input pointer validation for other SMI handlers). Thus, the attacker could elevate privileges from ring 0 to ring -2 and execute arbitrary code in SMM.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.45%

35.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Fujitsu	Lifebook A3510 Firmware	< 1.09
Fujitsu	Lifebook U9310 Firmware	< 2.17
Fujitsu	Lifebook U7511 Firmware	< 2.30
Fujitsu	Lifebook U7411 Firmware	< 2.30
Fujitsu	Lifebook U7311 Firmware	< 2.30
Fujitsu	Lifebook U9311 Firmware	<= 2.33
Fujitsu	Lifebook E5510 Firmware	< 2.23
Fujitsu	Lifebook U7510 Firmware	< 2.19
Fujitsu	Lifebook U7410 Firmware	< 2.19
Fujitsu	Lifebook U7310 Firmware	< 2.13
Fujitsu	Lifebook E459 Firmware	< 1.09
Fujitsu	Lifebook E449 Firmware	< 1.09

References

http://www.fmworld.net/biz/common/insyde/20220210/Vendor Advisory
https://kb.cert.org/vuls/id/796611Third Party Advisory, US Government Resource
https://support.ts.fujitsu.com/ProductSecurity/content/Fujitsu-PSIRT-FCCL-IS-2021-090903-Security-Advisory.aspVendor Advisory
https://www.binarly.io/advisoriesExploit, Third Party Advisory
http://www.fmworld.net/biz/common/insyde/20220210/Vendor Advisory
https://kb.cert.org/vuls/id/796611Third Party Advisory, US Government Resource
https://support.ts.fujitsu.com/ProductSecurity/content/Fujitsu-PSIRT-FCCL-IS-2021-090903-Security-Advisory.aspVendor Advisory
https://www.binarly.io/advisoriesExploit, Third Party Advisory
https://www.kb.cert.org/vuls/id/796611

Timeline

Published: May 4, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-28806?

How severe is CVE-2022-28806?

CVE-2022-28806 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.45% probability of exploitation in the next 30 days.

How do I fix CVE-2022-28806?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-28806?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST