HOMEVULNERABILITIESCVE-2021-3675
HIGH

CVE-2021-3675

CWE-20Published: June 16, 2022· Updated: Jun 17, 2026

7.1
CVSS v3.1

Official Description

Improper Input Validation vulnerability in synaTEE.signed.dll of Synaptics Fingerprint Driver allows a local authorized attacker to overwrite a heap tag, with potential loss of confidentiality. This issue affects: Synaptics Synaptics Fingerprint Driver 5.1.xxx.26 versions prior to xxx=340 on x86/64; 5.2.xxxx.26 versions prior to xxxx=3541 on x86/64; 5.2.2xx.26 versions prior to xx=29 on x86/64; 5.2.3xx.26 versions prior to xx=25 on x86/64; 5.3.xxxx.26 versions prior to xxxx=3543 on x86/64; 5.5.xx.1058 versions prior to xx=44 on x86/64; 5.5.xx.1102 versions prior to xx=34 on x86/64; 5.5.xx.1116 versions prior to xx=14 on x86/64; 6.0.xx.1104 versions prior to xx=50 on x86/64; 6.0.xx.1108 versions prior to xx=31 on x86/64; 6.0.xx.1111 versions prior to xx=58 on x86/64.

NVD Source

Technical Analysis

CVE-2021-3675 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), availability disruption (denial of service), with a CVSS base score of 7.1.

CVSS v3.1 Vector Breakdown

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

Affected Vendors & Products

synaptics1 product(s)
fingerprint driver
Source: NVD CPE · 1 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

PATCHhttps://support.hp.com/us-en/document/ish_6411153-6411191-16/hpsbhf03797
PATCHhttps://support.hp.com/us-en/document/ish_6411153-6411191-16/hpsbhf03797
ADVISORYhttps://support.lenovo.com/us/en/product_security/LEN-68054
ADVISORYhttps://synaptics.com/sites/default/files/2022-06/fingerprint-driver-SGX-security-brief-2022-06-14.pdf
ADVISORYhttps://support.lenovo.com/us/en/product_security/LEN-68054
ADVISORYhttps://synaptics.com/sites/default/files/2022-06/fingerprint-driver-SGX-security-brief-2022-06-14.pdf

All References (6)

→
https://support.hp.com/us-en/document/ish_6411153-6411191-16/hpsbhf03797Patch · Third Party Advisory
→
https://support.lenovo.com/us/en/product_security/LEN-68054Third Party Advisory
→
https://synaptics.com/sites/default/files/2022-06/fingerprint-driver-SGX-security-brief-2022-06-14.pdfVendor Advisory
→
https://support.hp.com/us-en/document/ish_6411153-6411191-16/hpsbhf03797Patch · Third Party Advisory
→
https://support.lenovo.com/us/en/product_security/LEN-68054Third Party Advisory
→
https://synaptics.com/sites/default/files/2022-06/fingerprint-driver-SGX-security-brief-2022-06-14.pdfVendor Advisory

Quick Facts

CVE IDCVE-2021-3675
CVSS Score7.1 / 10
SeverityHIGH
WeaknessCWE-20
CISA KEVNo
Affected1 vendor(s)
PublishedJun 16, 2022

Related CVEs (CWE-20)

CVE-2009-3245
10.0
CVE-2010-2298
10.0
CVE-2009-3102
10.0
CVE-2010-0360
10.0
CVE-2010-2193
10.0
CVE-2010-1517
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-3675 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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