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Fencer Intel
critical 9.8

CVE-2019-3568 kev in the critical feed json

A buffer overflow vulnerability in WhatsApp VOIP stack allowed remote code execution via specially crafted series of RTCP packets sent to a…

published 7y ago modified 4mo ago also EUVD-2019-13204

cvss
9.8
version 3.1, CNA
cisa kev
Exploited
added 2022-04-19
epss
30.1%
EPSS 30.1% chance of exploitation in 30 days, percentile 98%
public exploits
0
none known

Summary

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.

Patch / fix

cisa required action Apply updates per vendor instructions.

  • Facebook WhatsApp for Android 2.19.134
  • Facebook WhatsApp Business for Android 2.19.134
  • Facebook WhatsApp for iOS 2.19.51
  • Facebook WhatsApp Business for iOS 2.19.51
  • Facebook WhatsApp for Windows Phone 2.18.348
  • Facebook WhatsApp for Tizen 2.18.15

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Timeline

  1. 0-day patched (Project Zero)
  2. Published
  3. Added to CISA KEV
  4. CISA patch deadline
  5. CISA SSVC: exploitation active

Known exploited

Added
4y ago
Patch by
2022-05-10 (4y ago)
Ransomware
Not known
Required action
Apply updates per vendor instructions.
Vendor, product
Meta Platforms, WhatsApp
CISA name
WhatsApp VOIP Stack Buffer Overflow Vulnerability

Zero-day

Detected in real attacks while still unknown to the vendor and the public, per Google Project Zero's 0day In-the-Wild tracker.

Patched
2019-05-13
Details
project zero tracker

CISA SSVC

Exploitation
Active, exploited in the wild
Automatable
yes
Technical impact
total
Assessed
last yr.

Exploit prediction

30.08% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CISA ADP 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

  • 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

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.