Skip to main content
No exploitation reportedFix available

CVE-2018-6344

No exploitation reported by the sources we read.

  • Published2018-12-31
  • Fixed in2.18.293 · 2.18.172 · 2.18.93
  • WeaknessCWE-122 · CWE-787

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2018-12-3122:29CVE publishedNVD

Versions per branch

NVD
Whatsapp
BranchAffectedFixed in
2.18< 2.18.2932.18.293
2.18< 2.18.1722.18.172
2.18< 2.18.932.18.93

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA3 products

As facebook, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Facebook WhatsApp for Android
    Affected
    • = 2.18.293no fix stated
    • < 2.18.293fixed in 2.18.293custom
  • Facebook WhatsApp for iOS
    Affected
    • = 2.18.93no fix stated
    • < 2.18.93fixed in 2.18.93custom
  • Facebook WhatsApp for Windows Phone
    Affected
    • = 2.18.172no fix stated
    • < 2.18.172fixed in 2.18.172custom

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2019-01-01

Fix

  1. Update Whatsapp to 2.18.293 · 2.18.172 · 2.18.93

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2018-12-31
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-vhw2-763j-8c4r

Frequently asked questions

What is CVE-2018-6344?

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.

Is CVE-2018-6344 actively exploited?

Active exploitation of CVE-2018-6344 has not been confirmed. Its EPSS score was 1.9% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-6344?

CVE-2018-6344 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Hear about the next vulnerability in your software

Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».

Get alerts for this productCISA KEV additions, November 2026Search CVEs

No credit card required · No monthly cap on website lookups · 250 API requests/month

Go further

Related vulnerabilities

Same product first, then the same vendor advisory and the same publication week.

Back to CVE Database

Sources for this record