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CVE-2021-44751

19
FAUCET Score

CVE-2021-44751 is a vulnerability in F-Secure SAFE browser that allows a malicious website to trigger the dialer application on an Android device via embedded USSD codes in JavaScript or iFrames. This could lead to unwanted USSD messages or calls, though modern Android versions typically require user interaction. The vulnerability has a medium CVSS score of 5.3, indicating a network-based attack with low complexity and a low impact on integrity, but there is no evidence of active exploitation, publicly available exploit code, or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
< 18.5CPE matchmatch criteria
cpe:2.3:a:f-secure:safe:*:*:*:*:*:android:*:*

CVSS Data

CVSS version used by this source: 3.1

4.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
0.9
Impact Score
3.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.57%
Probability of exploitation in next 30 days
EPSS Percentile
43.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0057 is in the 28th percentile among its peer group of 23,703 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

f-secure.com / en/business/programs/vulnerability-reward-program/hall-of-fame
Not Applicable