PatchTheCVECVE-2021-44751: A vulnerability affecting F-Secure SAFE browser was discovered
CVE-2021-44751 is a medium-severity flaw (CVSS 4.3) affecting safe. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
A vulnerability affecting F-Secure SAFE browser was discovered. A maliciously crafted website attached with USSD code in JavaScript or iFrame can trigger dialer application from F-Secure browser which can be exploited by an attacker to send unwanted USSD messages or perform unwanted calls. In most modern Android OS, dialer application will require user interaction, however, some older Android OS may not need user interaction.
Why this priority
- No elevated risk signals yet
A fixed release or distro patch exists.
Risk facts
| CVSS score | 4.3 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | High |
| User interaction | Required |
| EPSS exploit chance | 0.6% (top 53%) |
| CISA exploited list | No |
| Weakness | CWE-276 |
| Published | 2022-03-25 |
| 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-2021-44751?
safe: upgrade to 18.5. Exact commands for each OS are on this page.
Is CVE-2021-44751 being exploited?
CVE-2021-44751 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-2021-44751 affect?
CVE-2021-44751 affects safe. Severity is medium (CVSS 4.3). A vulnerability affecting F-Secure SAFE browser was discovered. A maliciously crafted website attached with USSD code in JavaScript or iFrame can trigger dialer application from F-Secure browser which can be exploited by an attacker to send
How urgent is CVE-2021-44751?
Priority 27/100. No elevated risk signals yet.
Software pages
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