How severe is CVE-2021-44683?

CVE-2021-44683 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity low, and availability none.

Is CVE-2021-44683 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-44683?

CVE-2021-44683 affects Duckduckgo. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-44683?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-44683 published?

CVE-2021-44683 was published on 2022-03-25 and last updated on 2026-06-17.

CVE-2021-44683

CVE-2021-44683 is a high-severity vulnerability in Duckduckgo with a CVSS 3.x base score of 8.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1021.

Key facts

Severity: High (CVSS 3.x base score 8.2)
CVSS v2: 5.8
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1021
Affected product: Duckduckgo
Published: 2022-03-25
Last modified: 2026-06-17

Description

The DuckDuckGo browser 7.64.4 on iOS allows Address Bar Spoofing due to mishandling of the JavaScript window.open function (used to open a secondary browser window). This could be exploited by tricking users into supplying sensitive information such as credentials, because the address bar would display a legitimate URL, but content would be hosted on the attacker's web site.

Frequently asked questions

What is CVE-2021-44683?: The DuckDuckGo browser 7.64.4 on iOS allows Address Bar Spoofing due to mishandling of the JavaScript window.open function (used to open a secondary browser window). This could be exploited by tricking users into supplying sensitive information such as credentials, because the address bar would display a legitimate URL, but content would be hosted on the attacker's web site.
How severe is CVE-2021-44683?: CVE-2021-44683 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity low, and availability none.
Is CVE-2021-44683 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-44683?: CVE-2021-44683 affects Duckduckgo. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-44683?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-44683 published?: CVE-2021-44683 was published on 2022-03-25 and last updated on 2026-06-17.

References

https://www.cybercitadel.com/remote-address-bar-spoofing-and-html-injection-disclosures/

Affected products (1)

cpe:2.3:a:duckduckgo:duckduckgo:*:*:*:*:*:iphone_os:*:*

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