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Vulnerabilities

Vulnerability · CVE-2019-3568

WhatsApp VOIP Stack Buffer Overflow Vulnerability

Published May 13, 2019 · catalog updated Jun 16, 2026 · Meta Platforms WhatsApp

Patch now

CVE-2019-3568 is in the CISA known-exploited catalog, due May 10, 2022. Confirm Meta Platforms WhatsApp against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
Critical9.8
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
30.08%
Remediation
Remediation guidance
Affected products
cpe whatsapp/whatsapp · cpe whatsapp/whatsapp business · vendor Meta Platforms WhatsApp

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe whatsapp/whatsappversion unspecified
  • cpe whatsapp/whatsapp businessversion unspecified
  • vendor Meta Platforms WhatsAppversion unspecified

How to fix CVE-2019-3568

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2019-3568 is in the CISA known-exploited catalog, due May 10, 2022. Confirm Meta Platforms WhatsApp against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply updates per vendor instructions.

What should an analyst verify?

CWE-122: Heap-based Buffer Overflow; CWE-787: Out-of-bounds Write. EPSS 30.08%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. May 14, 2019 · Catalog

    Detected

    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

  2. Apr 19, 2022 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. May 10, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Jun 16, 2026 · Catalog

    Updated

    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

Sources

  • CISA KEVConfirmed exploitationCVE-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.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2019-3568

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2019-3568

    30-day exploitation probability 30.1%

    first.org
  • NIST NVDVulnerability recordCVE-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 fo

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-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.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.