CVE-2026-7831: ultravnc through 1.8.2.2 (inclusive); +1 more affected products

CVE-2026-7831. CVSS 3.1 base score 7.6 (HIGH, Source advisory). EPSS 0.00738 (percentile 0.54085), scored 24-Oct-2026.

Affected technology

ultravnc · through 1.8.2.2 (inclusive)
uvnc

UltraVNC · 0 through 1.8.2.2
uvnc

Description’s affected range: through 1.8.2.2

Component: vncviewer

Attack conditions (Source advisory, CVSS 3.1): Network (remote) · No privileges required · User interaction required

What an attacker can do

The source reports that an attacker could disrupt service under the conditions described by the source. Source advisory’s CVSS 3.1 assessment (base score 7.6/10) rates confidentiality and integrity impact as low; availability impact as high.

Published 25-Oct-2026 19:51 UTC

CWE: CWE-193, CWE-787
CCR priority: 30.6 /100 (P4)
CVSS 3.1: 7.6 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H · Source advisory
EPSS: 0.00738 · percentile 0.5425 · 2026-10-25
KEV: no

Provenance

FIRST EPSS daily exploit-probability · Source record · observed 2026-10-25 19:52:47.952465+00:00 UTC
NVD CVE API 2.0 · Source record · observed 2026-10-25 19:51:06.643138+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-7831.html