CVE-2021-24027 json
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…
published 2021-04-06 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-10947
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 3.8%
- EPSS 3.8% chance of exploitation in 30 days, percentile 90%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- Facebook WhatsApp for Android v2.21.4.18
Exploit prediction
3.81% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
Affected products
- Facebook WhatsApp Business for Android
- Facebook WhatsApp for Android
Classification
- Weakness
-
- CWE-524 Use of Cache Containing Sensitive Information
References
-
whatsapp.com
/security/advisories/2021/
vendor-advisory
Sources
- CVE List CVE-2021-24027
- NVD CVE-2021-24027
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.