9.8
Critical
CVE-2019-3568 WhatsApp VOIP Stack Buffer Overflow Vulnerability
Active exploitation observed
· CISA KEV catalogue
Required action
Apply updates per vendor instructions.
Ransomware campaigns
Not observed so far
Weakness
CWE-122
Description
A buffer overflow vulnerability in WhatsApp VOIP stack allowed remote code execution via specially crafted series of RTCP packets sent to a target phone number. The issue affects WhatsApp for Android prior to v2.19.134, WhatsApp Business for Android prior to v2.19.44, WhatsApp for iOS prior to v2.19.51, WhatsApp Business for iOS prior to v2.19.51, WhatsApp for Windows Phone prior to v2.18.348, and WhatsApp for Tizen prior to v2.18.15.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| WhatsApp for Android 2.19 | earliest → 2.19.134 | 2.19.134 |
| WhatsApp Business for Android 2.19 | earliest → < 2.19.134 | 2.19.134 |
| WhatsApp for iOS 2.19 | earliest → 2.19.51 | 2.19.51 |
| WhatsApp Business for iOS 2.19 | earliest → 2.19.51 | 2.19.51 |
| WhatsApp for Windows Phone 2.18 | earliest → 2.18.348 | 2.18.348 |
| WhatsApp for Tizen 2.18 | earliest → 2.18.15 | 2.18.15 |
Other CVEs of WhatsApp for Android
The 23 CVEs of WhatsApp for Android →
CVE-2026-23866
Incomplete validation of AI rich response messages for Instagram Reels in WhatsApp for iOS v2.25.8.0 to v2.26.15.72…
4.3
Medium
CVE-2023-38538
A race condition in an event subsystem led to a heap use-after-free issue in established audio/video calls that could…
5.0
Medium
CVE-2023-38537
A race condition in a network transport subsystem led to a heap use-after-free issue in established or unsilenced…
5.6
Medium
CVE-2021-24042
The calling logic for WhatsApp for Android prior to v2.21.23, WhatsApp Business for Android prior to v2.21.23,…
9.8
Critical