CVE-2021-24043

CRITICAL
Published Feb 2, 20224y ago · Modified Jun 17, 20262w ago
9.1 CVSS 3.1
Critical
Find Similar
Published Feb 2, 2022 4y ago
Last Modified Jun 17, 2026 2w ago

Description

A missing bound check in RTCP flag parsing code prior to WhatsApp for Android v2.21.23.2, WhatsApp Business for Android v2.21.23.2, WhatsApp for iOS v2.21.230.6, WhatsApp Business for iOS 2.21.230.7, and WhatsApp Desktop v2.2145.0 could have allowed an out-of-bounds heap read if a user sent a malformed RTCP packet during an established call.

CVSS Details

Base Score
9.1
Exploitability
3.9
Impact
5.2
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity None
Availability High

Threat Intelligence

No active exploitation signals — not in CISA KEV and no EPSS score yet.

Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-125 Out-of-bounds Read Memory Safety

Affected Products 5

VendorProductVersionRange
whatsappwhatsapp2.21.23.2any
whatsappwhatsapp2.21.230.6any
whatsappwhatsapp2.2145.0any
whatsappwhatsapp_business2.21.23.2any
whatsappwhatsapp_business2.21.230.7any

References 2

  • whatsapp.com https://www.whatsapp.com/security/advisories/2021/
    Not ApplicableVendor Advisory
  • whatsapp.com https://www.whatsapp.com/security/advisories/2022/
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.