CVE-2021-24042 is a critical out-of-bounds write vulnerability affecting WhatsApp and WhatsApp Business on Android, iOS, KaiOS, and Desktop versions prior to specified updates. This flaw could be triggered by a malicious actor making a one-to-one call to a vulnerable user. With a CVSS score of 9.8 (CRITICAL), it presents a severe risk, allowing for potential compromise of confidentiality, integrity, and availability without user interaction. While there is no evidence of active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion, indicating awareness among security researchers.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 2.21.23CPE matchmatch criteria | cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:android:-:* | ||
< 2.21.23CPE matchmatch criteria | cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:business:android:*:* | ||
< 2.21.230CPE matchmatch criteria | cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:iphone_os:-:* | ||
< 2.21.230CPE matchmatch criteria | cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:business:iphone_os:-:* | ||
< 2.2143CPE matchmatch criteria | cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:kaios:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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.
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 records are not available for this CVE.