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CVE-2021-33595

F-Secure Safe browser for iOS vulnerable to Address Bar Spoofing

LOW
3.5
CVSS Score
Published: August 11, 2021 at 10:28 AM UTC
Updated: June 17, 2026 at 03:54 AM UTC
2 products affected across 1 vendorSafeSecure Safe

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Severity
LOW3.5
Exploit prediction
EPSS 1%

Description

A address bar spoofing vulnerability was discovered in Safe Browser for iOS. Showing the legitimate URL in the address bar while loading the content from other domain. This makes the user believe that the content is served by a legit domain. A remote attacker can leverage this to perform address bar spoofing attack.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Safe· F Secure
95%
v < 18.4.272901
Affected range stops below 18.4.272901, so it looks safe — our inference, not a vendor statement
Secure Safe· F Secure
60%
18.4x ≤ v < 18.3x*18.4x
Affected range stops below 18.3x*, so it looks safe — our inference, not a vendor statement

References (3)

x_refsource_MISCVendor Advisory
Source: [email protected]
https://www.f-secure.com/en/business/programs/vulnerability-reward-program/hall-of-fame
x_refsource_MISCVendor Advisory
Source: [email protected]
https://www.f-secure.com/en/business/support-and-downloads/security-advisories
x_refsource_MISCVendor Advisory
Source: [email protected]
https://www.f-secure.com/en/business/support-and-downloads/security-advisories/cve-2021-33595

CVSS

3.5LOWF-SecureUS
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-Other

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