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CVE-2018-6349

29
FAUCET Score

CVE-2018-6349 describes a critical stack-based overflow vulnerability in WhatsApp for Android (versions prior to 2.18.248) and WhatsApp Business for Android (versions prior to 2.18.132). This flaw allowed a remote attacker to execute arbitrary code by sending a specially crafted packet during a call, due to a missing size check. With a CVSS score of 9.8 (CRITICAL), the vulnerability is easily exploitable over the network without user interaction, leading to complete compromise of confidentiality, integrity, and availability. Despite its high severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.18.248CPE matchmatch criteria
cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:android:*:*
< 2.18.132CPE matchmatch criteria
cpe:2.3:a:whatsapp:whatsapp_business:*:*:*:*:*:android:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.24%
Probability of exploitation in next 30 days
EPSS Percentile
81.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0224 is in the 70th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

facebook.com / security/advisories/cve-2018-6349
Third Party Advisory
securityfocus.com / bid/108804
Third Party AdvisoryVDB Entry