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CVE-2022-40903

23
FAUCET Score

CVE-2022-40903 describes a vulnerability in Aiphone GT-DMB-N 3-in-1 Video Entrance Station with NFC Reader 1.0.3 and related firmware, where the system fails to mitigate against repeated failed access attempts. This allows an attacker to gain administrative privileges through brute-force methods. The vulnerability has a CVSS score of 6.5 (Medium), indicating a low attack complexity and a network-adjacent attack vector, with a high impact on confidentiality. While there is no known active exploitation, public exploit code, or KEV listing, the vulnerability has garnered some community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.00CPE matchmatch criteria
cpe:2.3:o:aiphone:gt-dmb-n_firmware:*:*:*:*:*:*:*:*
< 3.00CPE matchmatch criteria
cpe:2.3:o:aiphone:gt-dmb_firmware:*:*:*:*:*:*:*:*
< 3.00CPE matchmatch criteria
cpe:2.3:o:aiphone:gt-dmb-lvn_firmware:*:*:*:*:*:*:*:*
< 2.00CPE matchmatch criteria
cpe:2.3:o:aiphone:gt-db-vn_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.29%
Probability of exploitation in next 30 days
EPSS Percentile
21.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0029 is in the 31st percentile among its peer group of 1,802 CVEs.

Social Chatter

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

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

jvn.jp / en/jp/JVN75437943/index.html
Third Party AdvisoryVDB Entry
aiphone.net
Vendor Advisory