An issue was discovered on certain Fujitsu LIEFBOOK devices (A3510, U9310, U7511/U7411/U7311, U9311, E5510/E5410, U7510/U7410/U7310, E459/E…

published 2022-05-04 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-33244

cvss: 7.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 41%
public exploits: 0; none known

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.

Patch / fix

fixed in 11

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_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

Exploit prediction

0.48% chance of exploitation in the next 30 days, higher than 41% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

binarly.io https://www.binarly.io/advisories referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	7.2	AV:L/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness

CWE-787 Out-of-bounds Write

References

binarly.io /advisories
exploit, third-party-advisory
support.ts.fujitsu.com /ProductSecurity/content/Fujitsu-PSIRT-FCCL-IS-2021-090903-Security-Advisory.asp
vendor-advisory
fmworld.net /biz/common/insyde/20220210/
vendor-advisory
kb.cert.org /vuls/id/796611
third-party-advisory, us-government-resource
kb.cert.org /vuls/id/796611

Sources

CVE List CVE-2022-28806
NVD CVE-2022-28806

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary