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CVE-2021-3675

23
FAUCET Score

CVE-2021-3675 is an improper input validation vulnerability in the synaTEE.signed.dll component of Synaptics Fingerprint Driver, affecting various versions prior to specific patch levels. A local, authorized attacker can exploit this to overwrite a heap tag, potentially leading to a loss of confidentiality and availability. With a CVSS v3.1 score of 7.1 (High), the vulnerability is easily exploitable with low attack complexity and no user interaction required. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.1.000.26, < 5.1.340.26CPE matchmatch criteria
cpe:2.3:a:synaptics:fingerprint_driver:*:*:*:*:*:*:*:*
>= 5.2.0000.26, < 5.2.3541.26CPE matchmatch criteria
cpe:2.3:a:synaptics:fingerprint_driver:*:*:*:*:*:*:*:*
>= 5.2.200.26, < 5.2.229.26CPE matchmatch criteria
cpe:2.3:a:synaptics:fingerprint_driver:*:*:*:*:*:*:*:*
>= 5.2.300.26, < 5.2.325.26CPE matchmatch criteria
cpe:2.3:a:synaptics:fingerprint_driver:*:*:*:*:*:*:*:*
>= 5.3.0000.26, < 5.3.3543.26CPE matchmatch criteria
cpe:2.3:a:synaptics:fingerprint_driver:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.26%
Probability of exploitation in next 30 days
EPSS Percentile
17.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0026 is in the 53rd percentile among its peer group of 16,994 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

support.hp.com / us-en/document/ish_6411153-6411191-16/hpsbhf03797
PatchThird Party Advisory
support.lenovo.com / us/en/product_security/LEN-68054
Third Party Advisory
synaptics.com / sites/default/files/2022-06/fingerprint-driver-SGX-security-brief-2022-06-14.pdf
Vendor Advisory