Critical severity · published Jun 14, 2019
CVE-2018-6349
When receiving calls using WhatsApp for Android, a missing size check when parsing a sender-provided packet allowed for a stack-based overflow
9.8
CVSS
2.2%
EPSS
No
On KEV
Description
When receiving calls using WhatsApp for Android, a missing size check when parsing a sender-provided packet allowed for a stack-based overflow. This issue affects WhatsApp for Android prior to 2.18.248 and WhatsApp Business for Android prior to 2.18.132.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.2% · higher than 83% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WH
Whatsapp · Whatsapp
before 2.18.248 · source: NVD
WB
Whatsapp Business · Whatsapp
before 2.18.132 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-6349
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-6349
Third Party Advisory
http://www.securityfocus.com/bid/108804
Third Party Advisory
https://www.facebook.com/security/advisories/cve-2018-6349/
More from Whatsapp
9.8
CVE-2019-3568
WhatsApp VOIP Stack Buffer Overflow Vulnerability
8.2
CVE-2019-18426
WhatsApp Cross-Site Scripting Vulnerability
5.4
CVE-2025-55177
Meta Platforms WhatsApp Incorrect Authorization Vulnerability
9.8
CVE-2022-36934
An integer overflow in WhatsApp could result in remote code execution in an established video call
9.8
CVE-2021-24042
The calling logic for WhatsApp for Android prior to v2.21.23, WhatsApp Business for Android prior to v2.21.23, WhatsApp for iOS prior to v2.21.230, WhatsApp Business for iOS prior…