No exploitation reportedFix available

CVE-2021-42098

Q: Is CVE-2021-42098 actively exploited?

Active exploitation of CVE-2021-42098 has not been confirmed. Its EPSS score was 1.8% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2021-42098?

CVE-2021-42098 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

No exploitation reported by the sources we read.

Published2021-10-18
Fixed in2021.2.16
WeaknessCWE-276

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

An incomplete permission check on entries in Devolutions Remote Desktop Manager before 2021.2.16 allows attackers to bypass permissions via batch custom PowerShell.

Timeline

dates in UTC

2021-10-1814:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-42098?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-42098?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Devolutions remote desktop manager

Branch	Affected	Fixed in	Source
2021.2	< 2021.2.16	2021.2.16	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Devolutions remote desktop manager to 2021.2.16

Advisories and patches

devolutions.netVendor Advisory
devolutions.netVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.18.8read 2026-10-23
NVDCVSS 2.06.5read 2026-10-23
NVDweakness (CWE)CWE-276read 2026-10-23
FIRST EPSSEPSS score1.8 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published: 2021-10-18
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2021-42098?

An incomplete permission check on entries in Devolutions Remote Desktop Manager before 2021.2.16 allows attackers to bypass permissions via batch custom PowerShell.

Is CVE-2021-42098 actively exploited?

Active exploitation of CVE-2021-42098 has not been confirmed. Its EPSS score was 1.8% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-42098?

CVE-2021-42098 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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