CVE-2021-24027
A cache configuration issue prior to WhatsApp for Android v2.21.4.18 and WhatsApp Business for...
A cache configuration issue prior to WhatsApp for Android v2.21.4.18 and WhatsApp Business for Android v2.21.4.18 may have allowed a third party with access to the device’s external storage to read cached TLS material.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
A cache configuration issue prior to WhatsApp for Android v2.21.4.18 and WhatsApp Business for Android v2.21.4.18 may have allowed a third party with access to the device’s external storage to read cached TLS material.
- Record
CVE-2021-24027- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:P/I:N/A:N - Weakness
- CWE-524
- Updated
- 2026-11-02
CVE List No score
A cache configuration issue prior to WhatsApp for Android v2.21.4.18 and WhatsApp Business for Android v2.21.4.18 may have allowed a third party with access to the device’s external storage to read cached TLS material.
- Record
CVE-2021-24027- Weakness
- CWE-524
- Updated
- 2026-11-02
EUVDEUVD-2021-10947 No score
A cache configuration issue prior to WhatsApp for Android v2.21.4.18 and WhatsApp Business for Android v2.21.4.18 may have allowed a third party with access to the device’s external storage to read cached TLS material.
- Record
EUVD-2021-10947- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-rr7p-xgf7-grw4
A cache configuration issue prior to WhatsApp for Android v2.21.4.18 and WhatsApp Business for...
A cache configuration issue prior to WhatsApp for Android v2.21.4.18 and WhatsApp Business for Android v2.21.4.18 may have allowed a third party with access to the device’s external storage to read cached TLS material.
- Record
GHSA-rr7p-xgf7-grw4- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-668
- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | CENSUS/whatsapp-mitd-mitm | 2021-03-11 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-24027 is a high vulnerability (CVSS 7.5) in Facebook Whatsapp Business For Android, published April 6, 2021. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 3.81%, the 90th percentile. No source names a fixed version.