HOMEVULNERABILITIESCVE-2018-6344
HIGH

CVE-2018-6344

CWE-122Published: December 31, 2018· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official Description

A heap corruption in WhatsApp can be caused by a malformed RTP packet being sent after a call is established. The vulnerability can be used to cause denial of service. It affects WhatsApp for Android prior to v2.18.293, WhatsApp for iOS prior to v2.18.93, and WhatsApp for Windows Phone prior to v2.18.172.

NVD Source

Technical Analysis

CVE-2018-6344 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 availability disruption (denial of service), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

whatsapp1 product(s)
whatsapp
Source: NVD CPE · 1 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

ADVISORYhttp://www.securityfocus.com/bid/106365
ADVISORYhttps://googleprojectzero.blogspot.com/2018/12/adventures-in-video-conferencing-part-3.html
ADVISORYhttp://www.securityfocus.com/bid/106365
ADVISORYhttps://googleprojectzero.blogspot.com/2018/12/adventures-in-video-conferencing-part-3.html

All References (4)

→
http://www.securityfocus.com/bid/106365Third Party Advisory · VDB Entry
→
https://googleprojectzero.blogspot.com/2018/12/adventures-in-video-conferencing-part-3.htmlExploit · Third Party Advisory
→
http://www.securityfocus.com/bid/106365Third Party Advisory · VDB Entry
→
https://googleprojectzero.blogspot.com/2018/12/adventures-in-video-conferencing-part-3.htmlExploit · Third Party Advisory

Quick Facts

CVE IDCVE-2018-6344
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-122
CISA KEVNo
Affected1 vendor(s)
PublishedDec 31, 2018

Related CVEs (CWE-122)

CVE-2026-46752
10.0
CVE-2022-34819
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CVE-2025-23123
10.0
CVE-2021-25387
10.0
CVE-2021-21940
10.0
CVE-2026-44050
9.9

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2018-6344 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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