Out-of-bounds read in Meta WhatsApp for Android
Priority MEDIUM 45CWE-125Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA.
Summary
An out-of-bounds read was possible in WhatsApp due to incorrect parsing of RTP extension headers. This issue affects WhatsApp for Android prior to 2.18.276, WhatsApp Business for Android prior to 2.18.99, WhatsApp for iOS prior to 2.18.100.6, WhatsApp Business for iOS prior to 2.18.100.2, and WhatsApp for Windows Phone prior to 2.18.224.
Why it matters now
EPSS 0.01693 77th percentileScored 2026-11-07
Fix Fixed WhatsApp for Android (Facebook): 2.18.276WhatsApp Business for Android (Facebook): 2.18.99+3 more products
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Meta | WhatsApp for Android | 2.18.276; before 2.18.276 | 2.18.276 | Patch available | CNA |
| Meta | WhatsApp Business for Android | 2.18.99; before 2.18.99 | 2.18.99 | Patch available | CNA |
| Meta | WhatsApp for iOS | 2.18.100.6; before 2.18.100.6 | 2.18.100.6 | Patch available | CNA |
| Meta | WhatsApp Business for iOS | 2.18.100.2; before 2.18.100.2 | 2.18.100.2 | Patch available | CNA |
| Meta | WhatsApp for Windows Phone | 2.18.224; before 2.18.224 | 2.18.224 | Patch available | CNA |
- WhatsApp for Android VendorMeta Affected 2.18.276; before 2.18.276 Fixed in 2.18.276 Patch available CNA
- WhatsApp Business for Android VendorMeta Affected 2.18.99; before 2.18.99 Fixed in 2.18.99 Patch available CNA
- WhatsApp for iOS VendorMeta Affected 2.18.100.6; before 2.18.100.6 Fixed in 2.18.100.6 Patch available CNA
- WhatsApp Business for iOS VendorMeta Affected 2.18.100.2; before 2.18.100.2 Fixed in 2.18.100.2 Patch available CNA
- WhatsApp for Windows Phone VendorMeta Affected 2.18.224; before 2.18.224 Fixed in 2.18.224 Patch available CNA
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:android:*:* | before 2.18.99 | Vulnerable | |
| cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:iphone_os:*:* | before 2.18.100.6 | Vulnerable | |
| cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:windows_phone:*:* | before 2.18.224 | Vulnerable | |
| cpe:2.3:a:whatsapp:whatsapp_business:*:*:*:*:*:iphone_os:*:* | before 2.18.100.2 | Vulnerable | |
| cpe:2.3:a:whatsapp:whatsapp_business:*:*:*:*:*:android:*:* | before 2.18.276 | Vulnerable |
- cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:android:*:* Versions before 2.18.99 Vulnerable ·WhatsApp
- cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:iphone_os:*:* Versions before 2.18.100.6 Vulnerable ·WhatsApp
- cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:windows_phone:*:* Versions before 2.18.224 Vulnerable ·WhatsApp
- cpe:2.3:a:whatsapp:whatsapp_business:*:*:*:*:*:iphone_os:*:* Versions before 2.18.100.2 Vulnerable ·WhatsApp
- cpe:2.3:a:whatsapp:whatsapp_business:*:*:*:*:*:android:*:* Versions before 2.18.276 Vulnerable ·WhatsApp
Remediation
- Fix · CNA WhatsApp for Android (Facebook) Fixed in 2.18.276
- Fix · CNA WhatsApp Business for Android (Facebook) Fixed in 2.18.99
- Fix · CNA WhatsApp for iOS (Facebook) Fixed in 2.18.100.6
- Fix · CNA WhatsApp Business for iOS (Facebook) Fixed in 2.18.100.2
- Fix · CNA WhatsApp for Windows Phone (Facebook) Fixed in 2.18.224
Timeline
- 2026-10-02 Threatist record created from CVE-2018-6350
- 2026-10-03 Alias added: GHSA-57fh-5mmw-ppxc
References
More Meta vulnerabilities
- TI-2025-34861 Deserialization of untrusted data in Meta react-server-dom-webpack KEVCVSS 3.1CRITICAL 10.0
- TI-2019-02633 Heap-based buffer overflow in Meta WhatsApp for Android KEVCVSS 3.1CRITICAL 9.8
- 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
Sources
- CVE-2018-6350 · CVE Program
- CVE-2018-6350 · NVD
- FIRST EPSS
- GHSA-57fh-5mmw-ppxc · 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