CVE-2021-34691: iDrive RemotePC before 4.0.1 on Linux allows denial of service

Q: How do I fix CVE-2021-34691?

remotepc: upgrade to 4.0.1. Exact commands for each OS are on this page.

Q: Is CVE-2021-34691 being exploited?

CVE-2021-34691 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-2021-34691 affect?

CVE-2021-34691 affects remotepc. Severity is high (CVSS 7.5). iDrive RemotePC before 4.0.1 on Linux allows denial of service. A remote and unauthenticated attacker can disconnect a valid user session by connecting to an ephemeral port.

Q: How urgent is CVE-2021-34691?

Priority 52/100. High severity; Remotely exploitable, no login, no user action; On your watchlist

This month

HIGH 7.5REMOTEWATCHLISTUPGRADE

CVE-2021-34691 is a high-severity flaw (CVSS 7.5) affecting remotepc. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

iDrive RemotePC before 4.0.1 on Linux allows denial of service. A remote and unauthenticated attacker can disconnect a valid user session by connecting to an ephemeral port.

Why this priority

High severity
Remotely exploitable, no login, no user action
On your watchlist

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	1.0% (top 36%)
CISA exploited list	No
Published	2021-07-15
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: idrive

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

Am I affected?

Timeline

2021-07-15 14:15 UTCPublished CVE record published
2026-06-17 03:56 UTCUpdated Record last modified

idrive remotepc UPGRADE

Affected: < 4.0.1

Fixed in: 4.0.1

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 4.0.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade remotepc

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade remotepc

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-2021-34691?

remotepc: upgrade to 4.0.1. Exact commands for each OS are on this page.

Is CVE-2021-34691 being exploited?

CVE-2021-34691 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-2021-34691 affect?

CVE-2021-34691 affects remotepc. Severity is high (CVSS 7.5). iDrive RemotePC before 4.0.1 on Linux allows denial of service. A remote and unauthenticated attacker can disconnect a valid user session by connecting to an ephemeral port.

How urgent is CVE-2021-34691?

Priority 52/100. High severity; Remotely exploitable, no login, no user action; On your watchlist

Related CVEs

CVE-2021-34692 HIGH 7.8 UPGRADE iDrive RemotePC before 7.6.48 on Windows allows privilege escalation
CVE-2021-34690 CRITICAL 9.8 UPGRADE iDrive RemotePC before 7.6.48 on Windows allows authentication bypass
CVE-2021-34689 MEDIUM 5.5 UPGRADE iDrive RemotePC before 7.6.48 on Windows allows information disclosure
CVE-2021-34688 LOW 3.3 UPGRADE iDrive RemotePC before 7.6.48 on Windows allows information disclosure
CVE-2021-34687 MEDIUM 5.3 UPGRADE iDrive RemotePC before 7.6.48 on Windows allows information disclosure

References

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