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CVE-2019-3568

CRITICAL
9.8
CVSS Score
Published: May 14, 2019 at 07:52 PM UTC
Updated: June 17, 2026 at 02:35 AM UTC
2 products affected across 1 vendorWhatsAppWhatsapp Business

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Severity
CRITICAL9.8
Exploitation
CISA KEV
Exploit prediction
EPSS 30%
SSVC
Active

Actively Exploited

CISA Known Exploited Vulnerabilities (KEV) Catalog

EPSS Score30.1%

EPSS (Exploit Prediction Scoring System) estimates a 30.1% chance this CVE is exploited in the wild within the next 30 days — higher than 98% of all CVEs. It complements CVSS: a high EPSS on a mid-severity CVE can still be urgent.

A buffer overflow vulnerability in WhatsApp VOIP stack allowed remote code execution via specially crafted series of RTCP packets sent to a target phone number.

Required Action
Apply updates per vendor instructions.
Ransomware Use
Unknown
Added to KEV
Apr 19, 2022
Remediation Due
May 10, 2022
1632 days overdue
Notes
https://nvd.nist.gov/vuln/detail/CVE-2019-3568

Description

A buffer overflow vulnerability in WhatsApp VOIP stack allowed remote code execution via specially crafted series of RTCP packets sent to a target phone number. The issue affects WhatsApp for Android prior to v2.19.134, WhatsApp Business for Android prior to v2.19.44, WhatsApp for iOS prior to v2.19.51, WhatsApp Business for iOS prior to v2.19.51, WhatsApp for Windows Phone prior to v2.18.348, and WhatsApp for Tizen prior to v2.18.15.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

WhatsApp· Whatsapp
95%
v < 2.18.15v < 2.18.348v < 2.19.134v < 2.19.512.18.152.18.3482.19.1342.19.51
Affected range stops below 2.18.15, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.18.348, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.19.134, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.19.51, so it looks safe — our inference, not a vendor statement
Whatsapp Business· Whatsapp
95%
v < 2.19.134v < 2.19.44v < 2.19.512.19.442.19.51
Affected range stops below 2.19.134, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.19.44, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.19.51, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (3)

VDB Entryx_refsource_BIDBroken LinkThird Party Advisory
Source: [email protected]
http://www.securityfocus.com/bid/108329
x_refsource_MISCThird Party Advisory
Source: [email protected]
https://www.facebook.com/security/advisories/cve-2019-3568
US Government Resource
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-3568

SSVC — Action Prioritization

SSVCActiveAutomatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

9.8CRITICALCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-122CWE-787

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