HOMEVULNERABILITIESCVE-2022-28806
HIGH

CVE-2022-28806

CWE-787Published: May 4, 2022· Updated: Jun 17, 2026

7.8
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2022-28806 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

fujitsu24 product(s)
lifebook a3510 firmwarelifebook a3510lifebook u9310 firmwarelifebook u9310lifebook u7511 firmwarelifebook u7511lifebook u7411 firmwarelifebook u7411lifebook u7311 firmwarelifebook u7311lifebook u9311 firmwarelifebook u9311+12
Source: NVD CPE · 24 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttp://www.fmworld.net/biz/common/insyde/20220210/
ADVISORYhttps://kb.cert.org/vuls/id/796611
ADVISORYhttps://support.ts.fujitsu.com/ProductSecurity/content/Fujitsu-PSIRT-FCCL-IS-2021-090903-Security-Advisory.asp
ADVISORYhttps://www.binarly.io/advisories
ADVISORYhttp://www.fmworld.net/biz/common/insyde/20220210/
ADVISORYhttps://kb.cert.org/vuls/id/796611
ADVISORYhttps://support.ts.fujitsu.com/ProductSecurity/content/Fujitsu-PSIRT-FCCL-IS-2021-090903-Security-Advisory.asp
ADVISORYhttps://www.binarly.io/advisories

All References (9)

→
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

Quick Facts

CVE IDCVE-2022-28806
CVSS Score7.8 / 10
SeverityHIGH
WeaknessCWE-787
CISA KEVNo
Affected1 vendor(s)
PublishedMay 4, 2022

Related CVEs (CWE-787)

CVE-2019-6235
10.0
CVE-2015-5096
10.0
CVE-2015-5098
10.0
CVE-2018-3991
10.0
CVE-2015-5105
10.0
CVE-2019-5684
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2022-28806 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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