7.5

CVE-2018-6344: facebook whatsapp for android Heap-based Buffer Overflow

CVSS: 7.5v3.1HighModified
Published 31-12-2018Last modified 06-05-2025
Open JSON

Vulnerability summary

CVE-2018-6344 is a high (CVSS 7.5) Heap-based Buffer Overflow vulnerability in facebook whatsapp for android. EPSS estimates a 1.95% chance of exploitation in the next 30 days, higher than 79.9% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
40/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
1.95%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 31-12-2018
    PublishedVulnerability first disclosed.
  2. 06-05-2025
    Last modifiedVulnerability information updated.

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.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

1.95%

Chance of exploitation in the next 30 days

Percentile

80%

Versus all other CVEs

30-day change

0.00 pp

From 1.95% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.95%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (googleprojectzero.blogspot.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Facebook3 products
Whatsapp1 product
  • whatsapp< 2.18.93 | < 2.18.172 | < 2.18.293

2 vendors · 4 products

References

2 links