HOMEVULNERABILITIESCVE-2019-3566
MEDIUM

CVE-2019-3566

CWE-284Published: May 10, 2019· Updated: Jun 17, 2026

5.9
CVSS v3.1

Official Description

A bug in WhatsApp for Android's messaging logic would potentially allow a malicious individual who has taken over over a WhatsApp user's account to recover previously sent messages. This behavior requires independent knowledge of metadata for previous messages, which are not available publicly. This issue affects WhatsApp for Android 2.19.52 and 2.19.54 - 2.19.103, as well as WhatsApp Business for Android starting in v2.19.22 until v2.19.38.

NVD Source

Technical Analysis

CVE-2019-3566 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 5.9.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityHigh
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Vendors & Products

whatsapp2 product(s)
whatsappwhatsapp business
Source: NVD CPE · 3 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://www.facebook.com/security/advisories/cve-2019-3566
ADVISORYhttps://www.facebook.com/security/advisories/cve-2019-3566

All References (2)

→
https://www.facebook.com/security/advisories/cve-2019-3566Third Party Advisory
→
https://www.facebook.com/security/advisories/cve-2019-3566Third Party Advisory

Quick Facts

CVE IDCVE-2019-3566
CVSS Score5.9 / 10
SeverityMEDIUM
WeaknessCWE-284
CISA KEVNo
Affected1 vendor(s)
PublishedMay 10, 2019

Related CVEs (CWE-284)

CVE-2026-34908
KEV10.0
CVE-2026-48907
KEV10.0
CVE-2026-48939
KEV10.0
CVE-2020-12493
10.0
CVE-2026-48908
KEV10.0
CVE-2021-38454
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2019-3566 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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