Is CVE-2019-3568 in the CISA KEV catalog?

Yes. CVE-2019-3568 is on the CISA Known Exploited Vulnerabilities list, added 2022-04-19.

What is the CVSS severity of CVE-2019-3568?

CVE-2019-3568 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2019-3568?

CVE-2019-3568 has an EPSS score of 39.17% (98th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2019-3568?

Upgrade whatsapp to 2.18.15 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2019-3568

CRITICALCISA KEVEPSS 98th pctl

9.8

CVSS v3

NVD

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.

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

How to fix

Remediation Available

whatsappNVD

Affected:< 2.18.15Fixed in:2.18.15CVE-2019-3568derived from NVD

Affected:< 2.18.348Fixed in:2.18.348CVE-2019-3568derived from NVD

Affected:< 2.19.134Fixed in:2.19.134CVE-2019-3568derived from NVD

Affected:< 2.19.51Fixed in:2.19.51CVE-2019-3568derived from NVD

whatsapp businessNVD

Affected:< 2.19.44Fixed in:2.19.44CVE-2019-3568derived from NVD

Affected:< 2.19.51Fixed in:2.19.51CVE-2019-3568derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

39.17%probability of exploitation in 30 days

98thpercentile

Very high risk: more likely to be exploited than 98% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

WhatsApp VOIP Stack Buffer Overflow Vulnerability

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.

Apply updates per vendor instructions.

Remediation due: 2022-05-10

References

Third-Party Advisory2

Government Resource1

cisa.gov

Related Vulnerabilities

Other CWE-122 (Heap-based Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2015-3113	Critical	9.8	100%	KEV	Fix
CVE-2024-26256	High	7.8	88%	-	Fix
CVE-2020-25687	Medium	5.9	87%	-	Fix
CVE-2009-3459	High	8.8	87%	KEV	Fix
CVE-2021-21017	High	8.8	86%	KEV	-
CVE-2020-25683	Medium	5.9	86%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-10-24.