CVE-2021-24041: facebook whatsapp business for android Heap-based Buffer Overflow
CVSS: 9.8v3.1CriticalModified
Published 07-12-2021Last modified 03-08-2024
Vulnerability summary
CVE-2021-24041 is a critical (CVSS 9.8) Heap-based Buffer Overflow vulnerability in facebook whatsapp business for android. EPSS estimates a 1.25% chance of exploitation in the next 30 days, higher than 68.8% of scored vulnerabilities.
CVSS score
9.8/10
010
Critical · v3.1 (NVD)EPSS score
1.25%
0%100%
Low · -0.14 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 07-12-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
A missing bounds check in image blurring code prior to WhatsApp for Android v2.21.22.7 and WhatsApp Business for Android v2.21.22.7 could have allowed an out-of-bounds write if a user sent a malicious image.
CVSS metrics
2 scores · 1 source · 2 versionsCritical 9.8Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesSingle source
High 7.5Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
1.25%
Chance of exploitation in the next 30 days
Percentile
69%
Versus all other CVEs
30-day change
-0.14 pp
From 1.39% on 19-09-2026
19-09-202619-10-2026
EPSS score1.25%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-122Heap-based Buffer OverflowA heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
- CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.
Affected systems
Facebook2 products
- whatsapp business for android≥ unspecified, < v2.21.22.7
- whatsapp for android≥ unspecified, < v2.21.22.7
Whatsapp2 products
- whatsapp< 2.21.22.7
- whatsapp_business< 2.21.22.7
2 vendors · 4 products