VULNERABILITY INTELLIGENCE

CVE-2018-6344

CVSS score7.5 HIGH

EPSS probability1.95%

CISA KEVNot currently listed

Published2018-12-31

Last modified2026-06-17

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

A heap corruption in WhatsApp can be caused by a malformed RTP packet being sent after a call is established. The vulnerability can be used to cause denial of service. It affects WhatsApp for Android prior to v2.18.293, WhatsApp for iOS prior to v2.18.93, and WhatsApp for Windows Phone prior to v2.18.172.

Weakness classification

CWE-122: Heap-based Buffer Overflow
CWE-787: Out-of-bounds Write

Primary references

cve-assign@fb.com — Third Party Advisory, VDB Entry
cve-assign@fb.com — Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108 — Exploit, Third Party Advisory