CVE-2022-43543

Name: CVE-2022-43543
Creator: NVD / NIST
Published: 2022-12-21T09:15:07.907+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.49%

Last modified Jun 17, 2026

CVE-2022-43543 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. 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. EPSS estimates a 0.49% chance of exploitation in the next 30 days.

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

Metrics

CVSS 3.1

5.4/10

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

EPSS Probability

0.49%

38.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-116

Affected Software

Vendor	Product	Versions
Docomo	\+ Message	< 3.9.4
Docomo	\+ Message	< 54.49.0500
Kddi	\+ Message	< 3.9.2
Kddi	\+ Message	< 3.9.4
Softbank	\+ Message	< 3.9.4
Softbank	\+ Message	< 12.9.5

References

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

Timeline

Published: Dec 21, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-43543?

How severe is CVE-2022-43543?

CVE-2022-43543 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.49% probability of exploitation in the next 30 days.

How do I fix CVE-2022-43543?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-43543?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST