HOMEVULNERABILITIESCVE-2022-43543
MEDIUM

CVE-2022-43543

NVD-CWE-OtherPublished: December 21, 2022· Updated: Jun 17, 2026

5.4
CVSS v3.1

Official Description

KDDI +Message App, NTT DOCOMO +Message App, and SoftBank +Message App contain a vulnerability caused by improper handling of Unicode control characters. +Message App displays text unprocessed, even when control characters are contained, and the text is shown based on Unicode control character's specifications. Therefore, a crafted text may display misleading web links. As a result, a spoofed URL may be displayed and phishing attacks may be conducted. Affected products and versions are as follows: KDDI +Message App for Android prior to version 3.9.2 and +Message App for iOS prior to version 3.9.4, NTT DOCOMO +Message App for Android prior to version 54.49.0500 and +Message App for iOS prior to version 3.9.4, and SoftBank +Message App for Android prior to version 12.9.5 and +Message App for iOS prior to version 3.9.4

NVD Source

Technical Analysis

CVE-2022-43543 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityLow
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Affected Vendors & Products

docomo1 product(s)
\+ message
kddi1 product(s)
\+ message
softbank1 product(s)
\+ message
Source: NVD CPE · 3 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

ADVISORYhttps://jvn.jp/en/jp/JVN43561812/index.html
ADVISORYhttps://www.au.com/mobile/service/plus-message/information/
ADVISORYhttps://www.docomo.ne.jp/service/plus_message/
ADVISORYhttps://www.softbank.jp/mobile/service/plus-message/
ADVISORYhttps://jvn.jp/en/jp/JVN43561812/index.html
ADVISORYhttps://www.au.com/mobile/service/plus-message/information/
ADVISORYhttps://www.docomo.ne.jp/service/plus_message/
ADVISORYhttps://www.softbank.jp/mobile/service/plus-message/

All References (8)

→
https://jvn.jp/en/jp/JVN43561812/index.htmlThird Party Advisory
→
https://www.au.com/mobile/service/plus-message/information/Vendor Advisory
→
https://www.docomo.ne.jp/service/plus_message/Vendor Advisory
→
https://www.softbank.jp/mobile/service/plus-message/Vendor Advisory
→
https://jvn.jp/en/jp/JVN43561812/index.htmlThird Party Advisory
→
https://www.au.com/mobile/service/plus-message/information/Vendor Advisory
→
https://www.docomo.ne.jp/service/plus_message/Vendor Advisory
→
https://www.softbank.jp/mobile/service/plus-message/Vendor Advisory

Quick Facts

CVE IDCVE-2022-43543
CVSS Score5.4 / 10
SeverityMEDIUM
WeaknessNVD-CWE-Other
CISA KEVNo
Affected3 vendor(s)
PublishedDec 21, 2022

Related CVEs (NVD-CWE-Other)

CVE-1999-0919
10.0
CVE-1999-0816
10.0
CVE-1999-0204
10.0
CVE-1999-0098
10.0
CVE-1999-0323
10.0
CVE-1999-0008
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2022-43543 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. CVE data is provided under the NVD usage policy.
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