CVE-2020-1894

Name: CVE-2020-1894
Creator: NVD / NIST
Published: 2020-09-03T21:15:10.813+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 1.75%

Last modified Jun 17, 2026

CVE-2020-1894 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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.. EPSS estimates a 1.75% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

1.75%

75.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Whatsapp	Whatsapp	< 2.20.30
Whatsapp	Whatsapp	< 2.20.35
Whatsapp	Whatsapp Business	< 2.20.20
Whatsapp	Whatsapp Business	< 2.20.30

References

https://www.whatsapp.com/security/advisories/2020Vendor Advisory
https://www.whatsapp.com/security/advisories/2020Vendor Advisory

Timeline

Published: Sep 3, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-1894?

How severe is CVE-2020-1894?

CVE-2020-1894 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.75% probability of exploitation in the next 30 days.

How do I fix CVE-2020-1894?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-1894?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST