Paper/Archive/CVE-2026-3204

CVE-2026-3204

Devolutions Server — Improper input validation in the error message page in Devolutions Server 2025.3.16 and earlier allows remote attackers to spoof the dis…

EPSS 0.6%CVSS 9.8

critical.is priorityof 100

CVSS 9.8 (ADP)9.8 / 10 × 3029.4 Not in CISA KEV+300.0 EPSS percentile 48.7.487 × 209.7 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

Improper input validation in the error message page in Devolutions Server 2025.3.16 and earlier allows remote attackers to spoof the displayed error message via a specially crafted URL.

Affected

ProductAffectedFixed inSource

Server≤ 2025.3.16–CNA

Scores by source

CISA ADP9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refdevolutions.net/security/advisories/DEVO-2026-0005