CVE-2020-15502

Name: CVE-2020-15502
Creator: NVD / NIST
Published: 2020-07-02T11:15:10.823+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.53%

Last modified Jun 17, 2026

CVE-2020-15502 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. The DuckDuckGo application through 5.58.0 for Android, and through 7.47.1.0 for iOS, sends hostnames of visited web sites within HTTPS .ico requests to servers in the duckduckgo.com domain, which might make visit data available temporarily at a Potentially Unwanted Endpoint. NOTE: the vendor has stated "the favicon service adheres to our strict privacy policy.. EPSS estimates a 1.53% chance of exploitation in the next 30 days.

Description

The DuckDuckGo application through 5.58.0 for Android, and through 7.47.1.0 for iOS, sends hostnames of visited web sites within HTTPS .ico requests to servers in the duckduckgo.com domain, which might make visit data available temporarily at a Potentially Unwanted Endpoint. NOTE: the vendor has stated "the favicon service adheres to our strict privacy policy.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.53%

71.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-200

Affected Software

Vendor	Product	Versions
Duckduckgo	Duckduckgo	<= 5.58.0
Duckduckgo	Duckduckgo	<= 7.47.1.0

References

https://github.com/duckduckgo/Android/blob/e2f2d54a6b4452277467db403a3546512401b493/app/src/main/java/com/duckduckgo/app/global/UriExtension.kt#L83-L88Patch, Third Party Advisory
https://github.com/duckduckgo/Android/issues/527Third Party Advisory
https://github.com/duckduckgo/iOS/blob/1ae03d7221180bd6791cf6f7f06922a96335cf75/Core/AppUrls.swift#L98-L100Third Party Advisory
https://news.ycombinator.com/item?id=23708166Patch, Third Party Advisory
https://news.ycombinator.com/item?id=23711597Third Party Advisory
https://github.com/duckduckgo/Android/blob/e2f2d54a6b4452277467db403a3546512401b493/app/src/main/java/com/duckduckgo/app/global/UriExtension.kt#L83-L88Patch, Third Party Advisory
https://github.com/duckduckgo/Android/issues/527Third Party Advisory
https://github.com/duckduckgo/iOS/blob/1ae03d7221180bd6791cf6f7f06922a96335cf75/Core/AppUrls.swift#L98-L100Third Party Advisory
https://news.ycombinator.com/item?id=23708166Patch, Third Party Advisory
https://news.ycombinator.com/item?id=23711597Third Party Advisory

Timeline

Published: Jul 2, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-15502?

How severe is CVE-2020-15502?

CVE-2020-15502 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.53% probability of exploitation in the next 30 days.

How do I fix CVE-2020-15502?

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-2020-15502?

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

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Source: NVD / NIST