Heap-based buffer overflow in Meta WhatsApp for Android
Priority CRITICAL 100Exploited in the wildCWE-122Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-122 and the CVSS impact.
Summary
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.
Why it matters now
Exploitation Active In CISA KEV since 2022-04-19CISA due date 2022-05-10
EPSS 0.30076 98th percentileScored 2026-11-07
Fix Fixed WhatsApp for Android (Facebook): 2.19.134WhatsApp Business for Android (Facebook): 2.19.134+4 more products
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Active
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Meta | WhatsApp for Android | 2.19.134; before 2.19.134 | 2.19.134 | Patch available | CNA |
| Meta | WhatsApp Business for Android | 2.19.44; before 2.19.134 | 2.19.134 | Patch available | CNA |
| Meta | WhatsApp for iOS | 2.19.51; before 2.19.51 | 2.19.51 | Patch available | CNA |
| Meta | WhatsApp Business for iOS | 2.19.51; before 2.19.51 | 2.19.51 | Patch available | CNA |
| Meta | WhatsApp for Windows Phone | 2.18.348; before 2.18.348 | 2.18.348 | Patch available | CNA |
| Meta | WhatsApp for Tizen | 2.18.15; before 2.18.15 | 2.18.15 | Patch available | CNA |
- WhatsApp for Android VendorMeta Affected 2.19.134; before 2.19.134 Fixed in 2.19.134 Patch available CNA
- WhatsApp Business for Android VendorMeta Affected 2.19.44; before 2.19.134 Fixed in 2.19.134 Patch available CNA
- WhatsApp for iOS VendorMeta Affected 2.19.51; before 2.19.51 Fixed in 2.19.51 Patch available CNA
- WhatsApp Business for iOS VendorMeta Affected 2.19.51; before 2.19.51 Fixed in 2.19.51 Patch available CNA
- WhatsApp for Windows Phone VendorMeta Affected 2.18.348; before 2.18.348 Fixed in 2.18.348 Patch available CNA
- WhatsApp for Tizen VendorMeta Affected 2.18.15; before 2.18.15 Fixed in 2.18.15 Patch available CNA
CPE configurations NVD · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:tizen:*:* | before 2.18.15 | Vulnerable | |
| cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:windows_phone:*:* | before 2.18.348 | Vulnerable | |
| cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:iphone_os:*:* | before 2.19.51 | Vulnerable | |
| cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:android:*:* | before 2.19.134 | Vulnerable | |
| cpe:2.3:a:whatsapp:whatsapp_business:*:*:*:*:*:android:*:* | before 2.19.44 | Vulnerable | |
| cpe:2.3:a:whatsapp:whatsapp_business:*:*:*:*:*:iphone_os:*:* | before 2.19.51 | Vulnerable |
- cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:tizen:*:* Versions before 2.18.15 Vulnerable ·WhatsApp
- cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:windows_phone:*:* Versions before 2.18.348 Vulnerable ·WhatsApp
- cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:iphone_os:*:* Versions before 2.19.51 Vulnerable ·WhatsApp
- cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:android:*:* Versions before 2.19.134 Vulnerable ·WhatsApp
- cpe:2.3:a:whatsapp:whatsapp_business:*:*:*:*:*:android:*:* Versions before 2.19.44 Vulnerable ·WhatsApp
- cpe:2.3:a:whatsapp:whatsapp_business:*:*:*:*:*:iphone_os:*:* Versions before 2.19.51 Vulnerable ·WhatsApp
Remediation
- Fix · CNA WhatsApp for Android (Facebook) Fixed in 2.19.134
- Fix · CNA WhatsApp Business for Android (Facebook) Fixed in 2.19.134
- Fix · CNA WhatsApp for iOS (Facebook) Fixed in 2.19.51
- Fix · CNA WhatsApp Business for iOS (Facebook) Fixed in 2.19.51
- Fix · CNA WhatsApp for Windows Phone (Facebook) Fixed in 2.18.348
- Fix · CNA WhatsApp for Tizen (Facebook) Fixed in 2.18.15
Timeline
- 2022-04-19 Added to CISA KEV
- 2026-10-02 Threatist record created from CVE-2019-3568
- 2026-10-03 Alias added: GHSA-cmw5-mmg8-r4fr
References
More Meta vulnerabilities
- TI-2025-34861 Deserialization of untrusted data in Meta react-server-dom-webpack KEVCVSS 3.1CRITICAL 10.0
- TI-2019-13416 Cross-site scripting in Meta WhatsApp Desktop KEVCVSS 3.1HIGH 8.2
- TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
- TI-2025-34857 Incorrect authorization in Meta WhatsApp Desktop for Mac KEVCVSS 3.1MEDIUM 5.4
- TI-2025-34863 Deserialization of untrusted data in Meta react-server-dom-webpack CVSS 3.1HIGH 7.5
- TI-2023-05201 Improper authorization in Meta React Developer Tools Extension CVSS 3.1MEDIUM 6.5
Sources
- CVE-2019-3568 · CVE Program
- CVE-2019-3568 · NVD
- CISA Known Exploited Vulnerabilities
- FIRST EPSS
- GHSA-cmw5-mmg8-r4fr · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences