How severe is CVE-2021-34691?

CVE-2021-34691 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-34691 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-34691?

CVE-2021-34691 affects Idrive Remotepc. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-34691?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-34691 published?

CVE-2021-34691 was published on 2021-07-15 and last updated on 2026-06-17.

CVE-2021-34691

CVE-2021-34691 is a high-severity vulnerability in Idrive Remotepc with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (60th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Idrive Remotepc
Published: 2021-07-15
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2021-34691?: 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 severe is CVE-2021-34691?: CVE-2021-34691 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-34691 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-34691?: CVE-2021-34691 affects Idrive Remotepc. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-34691?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-34691 published?: CVE-2021-34691 was published on 2021-07-15 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:idrive:remotepc:*:*:*:*:*:*:*:*

More vulnerabilities in Idrive Remotepc

CVE-2021-34690 — Critical (CVSS 9.8): iDrive RemotePC before 7.6.48 on Windows allows authentication bypass. A remote and unauthenticated attacker can bypass…
CVE-2021-34692 — High (CVSS 7.8): iDrive RemotePC before 7.6.48 on Windows allows privilege escalation. A local and low-privileged user can force…
CVE-2021-34689 — Medium (CVSS 5.5): iDrive RemotePC before 7.6.48 on Windows allows information disclosure. A locally authenticated attacker can read the…
CVE-2021-34687 — Medium (CVSS 5.3): iDrive RemotePC before 7.6.48 on Windows allows information disclosure. A man in the middle can recover a system's…
CVE-2021-34688 — Low (CVSS 3.3): iDrive RemotePC before 7.6.48 on Windows allows information disclosure. A locally authenticated attacker can read an…

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