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.

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

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

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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.