Cyber Alerts
Alert on WhatsApp VOIP Vulnerability
On May 14, 2019, WhatsApp has announced a vulnerability that could be used to target selected WhatsApp users. The National Cyber Coordination and Command Centre (NC4) would like to advise all Malaysian WhatsApp users to update their WhatsApp application to the latest version as recommended by WhatsApp to mitigate this issue.
- First observed
- 14 May 2019
- Last checked
- 31 Jul 2026
- Evidence records
- 1
- Publication state
- Published
What happened?
Current assessment
On May 14, 2019, WhatsApp has announced a vulnerability that could be used to target selected WhatsApp users. The National Cyber Coordination and Command Centre (NC4) would like to advise all Malaysian WhatsApp users to update their WhatsApp application to the latest version as recommended by WhatsApp to mitigate this issue.
Why it matters
Information leakage.
Who is affected?
Affected products and groups
- Software: and WhatsApp for Tizen prior to v2.18.15.
- Software: iOS and Android platform and affecting the following version of WhatsApp: WhatsApp for Android prior to v2.19.134
- Software: WhatsApp Business for Android prior to v2.19.44
- Software: WhatsApp Business for iOS prior to v2.19.51
- Software: WhatsApp for iOS prior to v2.19.51
- Software: WhatsApp for Windows Phone prior to v2.18.348
What should you do now?
Actions from official guidance
For technical teams
- NC4 advises everyone who uses the WhatsApp to take the following actions: Official source
- Update your mobile applications with the latest security patches and updates immediately; Update the operating system of the mobile devices (iOS, Android, Tizen) with the latest security patches and updates immediately; Switch on automatic updates on your mobile devices to get the latest updates; For Android users, please visit the Play Store, click on menu and choose 'My apps and Games'. Tap update next to the WhatsApp messenger. For iOS users, please visit the App Store and select Updates. Select WhatsApp to update; and For Windows 10 users, please visit the Microsoft store and click on 'Menu'. Select 'My Library' and tap 'Update' next to WhatsApp. Official source
Which sources support it?
Evidence and official sources
-
NACSA / NC4 Alerts and AdvisoriesOfficial sourceAlert on WhatsApp VOIP Vulnerability
On May 14, 2019, WhatsApp has announced a vulnerability that could be used to target selected WhatsApp users. The National Cyber Coordination and Command Centre (NC4) would like to advise all Malaysian WhatsApp users to update their WhatsApp application to the latest version as recommended by WhatsApp to mitigate this issue.
Published 14 May 2019 · Retrieved 31 Jul 2026