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CVE-2021-24041

31
FAUCET Score

CVE-2021-24041 is a critical out-of-bounds write vulnerability affecting WhatsApp and WhatsApp Business for Android versions prior to 2.21.22.7. This flaw, stemming from a missing bounds check in image blurring code, could be triggered by sending a specially crafted malicious image. With a CVSS score of 9.8 (Critical), it presents a severe risk, allowing for potential complete compromise of confidentiality, integrity, and availability without user interaction. While the vulnerability has a high FAUCET Risk Score of 79/100 and some community discussion, there is currently no evidence of active exploitation, nor are public exploit codes like Metasploit or ExploitDB available.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.21.22.7CPE matchmatch criteria
cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:android:*:*
< 2.21.22.7CPE 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
1.39%
Probability of exploitation in next 30 days
EPSS Percentile
69.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0139 is in the 56th 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

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

whatsapp.com / security/advisories/2021
Vendor Advisory