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Vulnerability record · CVE-2018-6350 · published 14 June 2019

CVE-2018-6350: Whatsapp out-of-bounds read vulnerability

Whatsapp · Whatsapp

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.

9.8 CVSS 3.0 Critical EPSS 1.7% · top 23.3% CWE-125 · Out-of-bounds read
9.8CVSS 3.0 base score, v2 7.5
1.7%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.securityfocus.com/bid/108803
https://www.facebook.com/security/advisories/cve-2018-6350/ Third Party Advisory
http://www.securityfocus.com/bid/108803
https://www.facebook.com/security/advisories/cve-2018-6350/ Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2018-6350), CISA KEV, FIRST EPSS (scores of 2026-10-18). This page is refreshed as NVD updates the record.