CVE-2020-1894 json
A stack write overflow in WhatsApp for Android prior to v2.20.35, WhatsApp Business for Android prior to v2.20.20, WhatsApp for iPhone prio…
published 2020-09-03 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-12720
- cvss
- 8.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.8%
- EPSS 1.8% chance of exploitation in 30 days, percentile 78%
- public exploits
- 0
- none known
Summary
A stack write overflow in WhatsApp for Android prior to v2.20.35, WhatsApp Business for Android prior to v2.20.20, WhatsApp for iPhone prior to v2.20.30, and WhatsApp Business for iPhone prior to v2.20.30 could have allowed arbitrary code execution when playing a specially crafted push to talk message.
Patch / fix
- Facebook WhatsApp Android 2.20.35
- Facebook WhatsApp Business for Android 2.20.20
- Facebook WhatsApp iPhone 2.20.30
- Facebook WhatsApp Business for iPhone 2.20.30
Exploit prediction
1.75% chance of exploitation in the next 30 days, higher than 78% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
Affected products
- Facebook WhatsApp Android
- Facebook WhatsApp Business for Android
- Facebook WhatsApp iPhone
- Facebook WhatsApp Business for iPhone
Classification
- Weakness
-
- CWE-787 Out-of-bounds Write
References
-
whatsapp.com
/security/advisories/2020
vendor-advisory
Sources
- CVE List CVE-2020-1894
- NVD CVE-2020-1894
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.