CVE-2023-22367Network attack vector

Traffic disclosure via improper certificate validation

Published Feb 13, 2023 · Updated Mar 21, 2025

Improper certificate validation in ICHIRAN Official App before 3.1.0 allows remote attackers to eavesdrop on encrypted communications. The server-certificate verification path accepts an untrusted network endpoint, but the publisher has not disclosed the omitted trust or hostname check. Exploitation requires control of the network path between the mobile app and its server; the documented consequence is intercepted traffic.

CVSS severity6.5
Medium
EPSS probability0.51%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper certificate validation in ICHIRAN Official App before 3.1.0 allows remote attackers to eavesdrop on encrypted communications. The server-certificate verification path accepts an untrusted network endpoint, but the publisher has not disclosed the omitted trust or hostname check. Exploitation requires control of the network path between the mobile app and its server; the documented consequence is intercepted traffic.

The record

CVE
CVE-2023-22367
Published
Feb 13, 2023
Updated
Mar 21, 2025
Vendor
ICHIRAN INC.
Product
ICHIRAN Official App
Classifications
CWE-295, T1557
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 13, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 21, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Ichiran App for iOS versions prior to 3.1.0, and Ichiran App for Android versions prior to 3.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ICHIRAN INC. · ICHIRAN Official Appversion=Ichiran App for iOS versions prior to 3.1.0, and Ichiran App for Android versions prior to 3.1.0

Published CVSS scores

5.9NIST NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
6.5JPCERT/CCCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
4.0JPCERT/CCAV:N/AC:H/Au:N/C:P/I:P/A:N
5.9CISA-ADPCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-295Improper Certificate Validation
T1557Adversary-in-the-Middle

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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