How severe is CVE-2019-3568?

CVE-2019-3568 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-3568 being actively exploited?

Yes. CVE-2019-3568 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-04-19, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2019-3568?

CVE-2019-3568 primarily affects Whatsapp. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-3568?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2019-3568 have an EU (EUVD) identifier?

Yes. CVE-2019-3568 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2019-13204. It is also flagged as exploited in the EUVD (since 2022-04-19).

When was CVE-2019-3568 published?

CVE-2019-3568 was published on 2019-05-14 and last updated on 2026-06-17.

CVE-2019-3568

CVE-2019-3568 is a critical-severity vulnerability in Whatsapp with a CVSS 3.x base score of 9.8. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2022-04-19). The underlying weakness is classified as CWE-787.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 39% (98th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2022-04-19)
EU (EUVD) id: EUVD-2019-13204
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2022-04-19)
Weakness: CWE-787
Affected product: Whatsapp
Published: 2019-05-14
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2019-3568?: 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.
How severe is CVE-2019-3568?: CVE-2019-3568 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-3568 being actively exploited?: Yes. CVE-2019-3568 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-04-19, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2019-3568?: CVE-2019-3568 primarily affects Whatsapp. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-3568?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2019-3568 have an EU (EUVD) identifier?: Yes. CVE-2019-3568 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2019-13204. It is also flagged as exploited in the EUVD (since 2022-04-19).
When was CVE-2019-3568 published?: CVE-2019-3568 was published on 2019-05-14 and last updated on 2026-06-17.

References

Affected products (6)

cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:tizen:*:*
cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:windows_phone:*:*
cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:iphone_os:*:*
cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:android:*:*
cpe:2.3:a:whatsapp:whatsapp_business:*:*:*:*:*:android:*:*
cpe:2.3:a:whatsapp:whatsapp_business:*:*:*:*:*:iphone_os:*:*

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