CVE-2020-1901

Name: CVE-2020-1901
Creator: NVD / NIST
Published: 2020-10-06T18:15:15.267+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 1.01%

Last modified Jun 17, 2026

CVE-2020-1901 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. Receiving a large text message containing URLs in WhatsApp for iOS prior to v2.20.91.4 could have caused the application to freeze while processing the message.. EPSS estimates a 1.01% chance of exploitation in the next 30 days.

Description

Receiving a large text message containing URLs in WhatsApp for iOS prior to v2.20.91.4 could have caused the application to freeze while processing the message.

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

1.01%

58.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Whatsapp	Whatsapp	< 2.20.91.4

References

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

Timeline

Published: Oct 6, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-1901?

Receiving a large text message containing URLs in WhatsApp for iOS prior to v2.20.91.4 could have caused the application to freeze while processing the message.

How severe is CVE-2020-1901?

CVE-2020-1901 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 1.01% probability of exploitation in the next 30 days.

How do I fix CVE-2020-1901?

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-2020-1901?

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

Scan your code now

Source: NVD / NIST