CVE-2022-28806

HIGH

7.8

CVSS Score

Published: May 4, 2022 at 02:10 PM UTC

Updated: June 17, 2026 at 04:39 AM UTC

24 products affected across 1 vendorLifebook U7310 FirmwareLifebook U7510 FirmwareLifebook E449 Firmware

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Severity

HIGH7.8

Exploit prediction

EPSS 0.5%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Lifebook A3510 Firmware · Fujitsu

95%

v < 1.09

Affected range stops below 1.09, so it looks safe — our inference, not a vendor statement

fujitsu-lifebook-a3510 (same device)

Lifebook E449 Firmware · Fujitsu

95%

v < 1.09

Affected range stops below 1.09, so it looks safe — our inference, not a vendor statement

fujitsu-lifebook-e449 (same device)

Lifebook E459 Firmware · Fujitsu

95%

v < 1.09

Affected range stops below 1.09, so it looks safe — our inference, not a vendor statement

fujitsu-lifebook-e459 (same device)

Lifebook E5510 Firmware · Fujitsu

95%

v < 2.23

Affected range stops below 2.23, so it looks safe — our inference, not a vendor statement

fujitsu-lifebook-e5510 (same device)

Lifebook U7310 Firmware · Fujitsu

95%

v < 2.13

Affected range stops below 2.13, so it looks safe — our inference, not a vendor statement

fujitsu-lifebook-u7310 (same device)

Lifebook U7311 Firmware · Fujitsu

95%

v < 2.30

Affected range stops below 2.30, so it looks safe — our inference, not a vendor statement

fujitsu-lifebook-u7311 (same device)

Lifebook U7410 Firmware · Fujitsu

95%

v < 2.19

Affected range stops below 2.19, so it looks safe — our inference, not a vendor statement

fujitsu-lifebook-u7410 (same device)

Lifebook U7411 Firmware · Fujitsu

95%

v < 2.30

Affected range stops below 2.30, so it looks safe — our inference, not a vendor statement

fujitsu-lifebook-u7411 (same device)

Lifebook U7510 Firmware · Fujitsu

95%

v < 2.19

Affected range stops below 2.19, so it looks safe — our inference, not a vendor statement

fujitsu-lifebook-u7510 (same device)

Lifebook U7511 Firmware · Fujitsu

95%

v < 2.30

Affected range stops below 2.30, so it looks safe — our inference, not a vendor statement

fujitsu-lifebook-u7511 (same device)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (5)

x_refsource_MISCVendor Advisory

Source: [email protected]

http://www.fmworld.net/biz/common/insyde/20220210/

x_refsource_MISCThird Party AdvisoryUS Government Resource

Source: [email protected]

https://kb.cert.org/vuls/id/796611

x_refsource_MISCVendor Advisory

Source: [email protected]

https://support.ts.fujitsu.com/ProductSecurity/content/Fujitsu-PSIRT-FCCL-IS-2021-090903-Security-Advisory.asp

x_refsource_MISCExploitThird Party Advisory

Source: [email protected]

https://www.binarly.io/advisories

Source: af854a3a-2127-422b-91ae-364da2661108

https://www.kb.cert.org/vuls/id/796611

CVSS

7.8HIGH[email protected]

Attack Vector: LOCAL
Complexity: LOW
Privileges: LOW
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-787

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