PT-2019-10148 · Facebook · Whatsapp Business For Ios+1

Published 2019-06-14 · Updated 2025-09-03 · CVE-2018-20655

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions: WhatsApp for iOS versions prior to 2.18.90.24 WhatsApp Business for iOS versions prior to 2.18.90.24

Description: The issue is related to a missing size check when parsing a sender-provided packet, which allowed for a stack-based overflow when receiving calls.

Recommendations: For WhatsApp for iOS versions prior to 2.18.90.24, update to version 2.18.90.24 or later. For WhatsApp Business for iOS versions prior to 2.18.90.24, update to version 2.18.90.24 or later.

Fix

Stack Overflow

Memory Corruption

Weakness Enumeration

CWE-121

CWE-787

Related Identifiers

CVE-2018-20655

Affected Products

Whatsapp Business For Ios

Whatsapp For Ios

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2018-20655 · Security Note
• https://osv.dev/vulnerability/CVE-2018-20655 · Vendor Advisory
• https://t.me/cveNotify/134211 · Telegram Post
• https://facebook.com/security/advisories/cve-2018-20655 · Note
• http://securityfocus.com/bid/108805 · Note