Page generated: 09 Nov 2026, 09:59 UTC
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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 fo…

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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.
CVSS 9.8 (CRITICAL) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE
0.0/10
REALITY · THREAT PRIORITY
8.6/10
General review priority; not probability

Evidence confidence: Exploitation recorded

Why this priority?
  • Recorded exploitation baseline: +7.00
  • Technical severity: CVSS 9.8: +1.47
  • Fresh EPSS: 30.08%: +0.15

General review priority, not probability, victim count or asset-specific risk. A range covers missing CVSS/EPSS inputs within the current evidence state.

Sources: 12 documents and public datasets.

Hype components

Headline sample (25%)
0/100
Press, 30 days (60%)
0/100
Grounded branding (15%)
0/100
HYPE TOTAL0/100

Sources and documents

The Hacker News
Press · 07 May 2025, 07:00 · NSO Group Fined $168M for Targeting 1,400 WhatsApp Users With Pegasus Spyware - The Hacker News
The Hacker News
Press · 18 Nov 2024, 08:00 · NSO Group Exploited WhatsApp to Install Pegasus Spyware Even After Meta's Lawsuit - The Hacker News
Zimperium
Press · 14 Jun 2019, 07:00 · WhatsApp Buffer Overflow Vulnerability: Under the Scope - Zimperium
TechRadar
Press · 15 May 2019, 07:00 · WhatsApp attack allowed hackers to install surveillance tech - TechRadar
Zimperium
Press · 15 May 2019, 07:00 · WhatsApp Buffer Overflow Vulnerability Reportedly Exploited In The Wild - Zimperium
See all 12 source documents
GBHackers News
Press · 14 May 2019, 07:00 · WhatsApp Hacked – Attackers Exploit iPhone or Android device by Making a WhatsApp call - GBHackers News
The Hacker News
Press · 14 May 2019, 07:00 · Hackers Used WhatsApp 0-Day Flaw to Secretly Install Spyware On Phones - The Hacker News
Help Net Security
Press · 14 May 2019, 07:00 · WhatsApp flaw used to install spyware by simply calling the target - Help Net Security
SecurityWeek
Press · 14 May 2019, 07:00 · WhatsApp Vulnerability Exploited to Spy on Users - SecurityWeek
Check Point Research
Press · 14 May 2019, 07:00 · The NSO WhatsApp Vulnerability – This is How It Happened - Check Point Research
The Register
Press · 14 May 2019, 07:00 · It's 2019 and a WhatsApp call can hack a phone: Zero-day exploit infects mobes with spyware - The Register
Ars Technica
Press · 13 May 2019, 07:00 · WhatsApp vulnerability exploited to infect phones with Israeli spyware - Ars Technica

Score evolution

● Hype   ● Reality

Earlier evidence-support scores are retained in history; this chart shows only the current priority definition.

First record: hype 0.0 · reality 8.6 (2026-11-02 15:12). The curve appears once the score changes.

Public exploit evidence

0

Public exploit entries / repo candidates

Evidence context and dated references

Reality is general threat/review priority, combining observed exploitation, CVSS severity and fresh EPSS. Evidence confidence is separate. This is not calibrated risk, a victim count or an asset-specific assessment. A range reflects missing numeric inputs.

Evidence in context

Confidence in exploitation evidence
Exploitation recorded
Priority basis
Recorded exploitation; CVSS 9.8; EPSS 30.1%
Attention, last 30 days
0 distinct story titles; 0 press documents; 0 publisher domains.
Technical potential
network access, no prior privileges, no user interaction.
Observed activity
Exploitation recorded in CISA KEV.
Known scale
Not quantified.
Evidence confidence basis
Trusted exploitation confirmation

Score evaluated: 2026-11-05 13:58:09.064523+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
First press mention
13 May 2019, 07:00
Published
14 May 2019, 19:52
Added to the CISA KEV catalog
19 Apr 2022, 00:00
Latest press mention
07 May 2025, 07:00
Score calculated
05 Nov 2026, 13:58