Out-of-bounds Read in Whatsapp
CVE-2021-24043
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 ha…
Vulnerability class: Buffer Overflow
EPSS: 0.011 (62.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.
Affected products
- Whatsapp — versions 2.21.23.2, 2.21.230.6, 2.2145.0
- Whatsapp Whatsapp_business — versions 2.21.23.2, 2.21.230.7
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve-assign@fb.com (x_refsource_CONFIRM, Not Applicable, Vendor Advisory)
- nvd@nist.gov (Vendor Advisory)
Frequently asked questions
- What is CVE-2021-24043?
- CVE-2021-24043 is a critical-severity vulnerability in Whatsapp, classified under Out-of-bounds Read. CVSS score: 9.1/10. Published 2022-02-02.
- How severe is CVE-2021-24043?
- Critical severity. CVSS v3 base score is 9.1 out of 10.
- Is CVE-2021-24043 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.