CASCACascade Atlas

Evidence dossier

CVE-2019-3568

CVE-2019-3568

71.3–92.0Priority evidence range
As known Jul 19, 2026, 5:00 AM UTCgen-56ccdaf9

Normalized restatement

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.

State
PUBLISHED
Published
May 14, 2019
Updated
Oct 21, 2025
Evidence coverage
72%
CISA KEVCatalog member

Apply updates per vendor instructions.

FIRST EPSS39.17%

2026-07-18 · v2026.06.15 · percentile 98.4%

Source stateConflict visible

Distinct CVSS assessments remain side by side; none are averaged.

Source comparison

Who said what

CISA-ADPindependent enrichment
container

CISA ADP Vulnrichment

CVEderivative copy
container

CVE Program Container

facebookoriginal assertion
container

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.

CISA KEVoriginal assertion
observed_exploitation

WhatsApp VOIP Stack Buffer Overflow Vulnerability

FIRST EPSSoriginal assertion
model_probability

Probability 0.391660000000; percentile 0.984350000000

Applicability

Cited product scope

Trace impact →
FacebookWhatsApp Business for Android
[{"status": "affected", "version": "2.19.44"}, {"status": "affected", "version": "unspecified", "lessThan": "2.19.134", "versionType": "custom"}]unknown
FacebookWhatsApp Business for iOS
[{"status": "affected", "version": "2.19.51"}, {"status": "affected", "version": "unspecified", "lessThan": "2.19.51", "versionType": "custom"}]unknown
FacebookWhatsApp for Android
[{"status": "affected", "version": "2.19.134"}, {"status": "affected", "version": "unspecified", "lessThan": "2.19.134", "versionType": "custom"}]unknown
FacebookWhatsApp for iOS
[{"status": "affected", "version": "2.19.51"}, {"status": "affected", "version": "unspecified", "lessThan": "2.19.51", "versionType": "custom"}]unknown
FacebookWhatsApp for Tizen
[{"status": "affected", "version": "2.18.15"}, {"status": "affected", "version": "unspecified", "lessThan": "2.18.15", "versionType": "custom"}]unknown
FacebookWhatsApp for Windows Phone
[{"status": "affected", "version": "2.18.348"}, {"status": "affected", "version": "unspecified", "lessThan": "2.18.348", "versionType": "custom"}]unknown
Unknown vendorUnknown product
cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:android:*:*; end excluding 2.19.134supported
Unknown vendorUnknown product
cpe:2.3:a:whatsapp:whatsapp_business:*:*:*:*:*:android:*:*; end excluding 2.19.44supported
Unknown vendorUnknown product
cpe:2.3:a:whatsapp:whatsapp_business:*:*:*:*:*:iphone_os:*:*; end excluding 2.19.51supported
Unknown vendorUnknown product
cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:iphone_os:*:*; end excluding 2.19.51supported
Unknown vendorUnknown product
cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:tizen:*:*; end excluding 2.18.15supported
Unknown vendorUnknown product
cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:windows_phone:*:*; end excluding 2.18.348supported

Assessments

CVSS by origin

9.8
nvd@nist.govCVSS 3.1 · role PrimaryCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5
nvd@nist.govCVSS 2.0 · role PrimaryAV:N/AC:L/Au:N/C:P/I:P/A:P
9.8
134c704f-9b21-4f2e-91b3-4a467353bcc0CVSS 3.1 · role SecondaryCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8
CISA-ADPCVSS 3.1 · role unknownCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Limitations and unknowns

  • KEV membership is authoritative for the catalog, not proof of exposure in any environment.
  • EPSS is a dated model probability and not an individual-environment prediction.
  • Affected or fixed status applies only to the exact cited product and version scope; unresolved scope remains unknown.
  • NVD-carried upstream facts remain derivative and are not independent corroboration.
  • Only NVD metrics validated under the generation-bound calculator are Public Priority eligible; direct CVE record metrics remain display-only.
  • NVD CVSS source eligibility is closed: NVD-authored, exact record-source, or registered same-CVE container origin; unmapped sources remain display-only.
  • Factor D is unknown in Public Core because no accepted canonical mapping-obligation ledger is present.
  • Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.