November 13, 2026 Follow Egret
CVE-2019-3568 · CVE record: PUBLISHED

WhatsApp VOIP Stack Buffer Overflow Vulnerability

Facebook WhatsApp for Android, Facebook WhatsApp Business for Android, Facebook WhatsApp for iOS, Facebook WhatsApp Business for iOS, Facebook WhatsApp for Windows Phone, Facebook WhatsApp for Tizen

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.

Exploitation evidence

Known exploited · CISA KEV listed

Added 2022-04-19. Ransomware campaign use: Unknown.

CISA required action: Apply updates per vendor instructions.

CISA due date: 2022-05-10. This is the catalog’s deadline, not an assessment of your organization’s exposure.

KEV checked 13 Nov 2026, 00:20 Jerusalem · Original catalog ↗

Reported products and versions

Facebook / WhatsApp for Android

Default status: Not specified

  • affected: 2.19.134
  • affected: unspecified to < 2.19.134 (custom)

Facebook / WhatsApp Business for Android

Default status: Not specified

  • affected: 2.19.44
  • affected: unspecified to < 2.19.134 (custom)

Facebook / WhatsApp for iOS

Default status: Not specified

  • affected: 2.19.51
  • affected: unspecified to < 2.19.51 (custom)

Facebook / WhatsApp Business for iOS

Default status: Not specified

  • affected: 2.19.51
  • affected: unspecified to < 2.19.51 (custom)

Facebook / WhatsApp for Windows Phone

Default status: Not specified

  • affected: 2.18.348
  • affected: unspecified to < 2.18.348 (custom)

Facebook / WhatsApp for Tizen

Default status: Not specified

  • affected: 2.18.15
  • affected: unspecified to < 2.18.15 (custom)

Fixes and workarounds

No explicit solution text in the downloaded CVE record. Consult the vendor advisory; unaffected version ranges are shown above as reported, not inferred as a patch recommendation.

Sources and related reporting

CVE Program record ↗ · Download tracked evidence as JSON

Observed change timeline

History begins when Egret first downloads each source. It is not the complete upstream CVE history.

12 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-12",
  "epss": 0.30076,
  "percentile": 0.98238
}
10 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-10",
  "epss": 0.30076,
  "percentile": 0.98227
}
09 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-09",
  "epss": 0.30076,
  "percentile": 0.98225
}
08 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-08",
  "epss": 0.30076,
  "percentile": 0.98224
}
07 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-07",
  "epss": 0.30076,
  "percentile": 0.98223
}
06 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-06",
  "epss": 0.30076,
  "percentile": 0.98221
}
06 Nov 2026, 12:20 Jerusalem · CVE Program record changed

Stored CNA snapshot at this observation.

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05 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-05",
  "epss": 0.30076,
  "percentile": 0.9822
}
04 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-04",
  "epss": 0.30076,
  "percentile": 0.98218
}
03 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-03",
  "epss": 0.30076,
  "percentile": 0.98215
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03 Nov 2026, 02:22 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
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  "epss": 0.30076,
  "percentile": 0.98212
}
03 Nov 2026, 02:22 Jerusalem · CISA KEV status changed

Stored KEV snapshot at this observation.

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  "dateAdded": "2022-04-19",
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