PatchTheCVECVE-2021-33596: Showing the legitimate URL in the address bar while loading the content from other domain
CVE-2021-33596 is a low-severity flaw (CVSS 3.5) affecting safe. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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. Exploiting the vulnerability requires the user to click on a specially crafted, seemingly legitimate URL containing an embedded malicious redirect while using F-Secure Safe Browser for iOS.
Why this priority
- No elevated risk signals yet
A fixed release or distro patch exists.
Risk facts
| CVSS score | 3.5 (Low) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | Required |
| EPSS exploit chance | 0.8% (top 44%) |
| CISA exploited list | No |
| Weakness | CWE-1021 |
| Published | 2021-08-05 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2021-33596?
safe: upgrade to 18.4.272901. Exact commands for each OS are on this page.
Is CVE-2021-33596 being exploited?
CVE-2021-33596 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2021-33596 affect?
CVE-2021-33596 affects safe. Severity is low (CVSS 3.5). 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. Exploiting the vulnerability requires the user to click on a specially craf
How urgent is CVE-2021-33596?
Priority 26/100. No elevated risk signals yet.
Software pages
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