CVE-2021-44748: A vulnerability affecting F-Secure SAFE browser was discovered whereby browsers loads images automatically thi

Routine

MEDIUM 5.5DOWNGRADE

CVE-2021-44748 is a medium-severity flaw (CVSS 5.5) 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 whereby browsers loads images automatically this vulnerability can be exploited remotely by an attacker to execute the JavaScript can be used to trigger universal cross-site scripting through the browser. User interaction is required prior to exploitation, such as entering a malicious website to trigger the vulnerability.

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.5% (top 54%)
CISA exploited list	No
Weakness	CWE-79
Published	2022-03-06
Last modified	2026-06-17

Publisher (CNA): F-Secure · Vendor: f-secure

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-03-06 20:15 UTCPublished CVE record published
2026-06-17 04:12 UTCUpdated Record last modified

f-secure safe DOWNGRADE

Affected: 18.5

Fixed in: no fixed release known

Safe to downgrade to: a release before 18.5

1. Check installed version

apt-cache policy safe || rpm -q safe || safe --version

2. No fixed release: DOWNGRADE to a release before 18.5 (Debian / Ubuntu)

apt-cache madison safe sudo apt install safe=<VERSION_BEFORE_18.5> sudo apt-mark hold safe

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list safe sudo dnf downgrade safe-<VERSION_BEFORE_18.5> sudo dnf versionlock add safe

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
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-2021-44748?

safe: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-44748 being exploited?

CVE-2021-44748 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-2021-44748 affect?

CVE-2021-44748 affects safe. Severity is medium (CVSS 5.5). A vulnerability affecting F-Secure SAFE browser was discovered whereby browsers loads images automatically this vulnerability can be exploited remotely by an attacker to execute the JavaScript can be used to trigger universal cross-site scr

How urgent is CVE-2021-44748?

Priority 31/100. No elevated risk signals yet.

Related CVEs

CVE-2025-25595 CRITICAL 9.8 DOWNGRADE A lack of rate limiting in the login page of Safe App version a3.0.9 allows attackers to bypass authentication
CVE-2023-2904 HIGH 7.3 UPGRADE The External Visitor Manager portal of HID’s SAFE versions 5.8.0 through 5.11.3 are vulnerable to manipulation
CVE-2022-47524 MEDIUM 5.4 UPGRADE F-Secure SAFE Browser 19.1 before 19.2 for Android allows an IDN homograph attack.
CVE-2022-38164 MEDIUM 6.5 UPGRADE UPGRADE A vulnerability affecting F-Secure SAFE browser for Android and iOS was discovered
CVE-2022-38163 LOW 3.5 UPGRADE UPGRADE A Drag and Drop spoof vulnerability was discovered in F-Secure SAFE Browser for Android and iOS version 19.0 a

References

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