CVE-2021-3845: ws-scrcpy is vulnerable to External Control of File Name or Path

Q: How do I fix CVE-2021-3845?

ws scrcpy: upgrade to 0.7.1. Exact commands for each OS are on this page.

Q: Is CVE-2021-3845 being exploited?

CVE-2021-3845 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-3845 affect?

CVE-2021-3845 affects ws scrcpy. Severity is high (CVSS 7.5). ws-scrcpy is vulnerable to External Control of File Name or Path

Q: How urgent is CVE-2021-3845?

Priority 54/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.5REMOTEUPGRADE

CVE-2021-3845 is a high-severity flaw (CVSS 7.5) affecting ws scrcpy. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

ws-scrcpy is vulnerable to External Control of File Name or Path

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.3% (top 30%)
CISA exploited list	No
Weakness	CWE-73, CWE-610
Published	2022-01-04
Last modified	2026-06-17

Publisher (CNA): huntr.dev · Vendor: ws scrcpy project

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

Am I affected?

Timeline

2022-01-04 17:15 UTCPublished CVE record published
2026-06-17 04:05 UTCUpdated Record last modified

ws scrcpy project ws scrcpy UPGRADE

Affected: < 0.7.1

Fixed in: 0.7.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy ws-scrcpy || rpm -q ws-scrcpy || ws-scrcpy --version

2. UPGRADE to 0.7.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade ws-scrcpy

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade ws-scrcpy

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2021-3845?

ws scrcpy: upgrade to 0.7.1. Exact commands for each OS are on this page.

Is CVE-2021-3845 being exploited?

CVE-2021-3845 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-2021-3845 affect?

CVE-2021-3845 affects ws scrcpy. Severity is high (CVSS 7.5). ws-scrcpy is vulnerable to External Control of File Name or Path

How urgent is CVE-2021-3845?

Priority 54/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

References

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