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01 Record

CVE-2019-8268

UltraVNC revision 1206 has multiple off-by-one vulnerabilities in VNC client code connected with improper usage of ClientConnection::ReadString function, which can potentially result code execution.

UnratedPUBLISHEDCNA: Kaspersky
CNA base scoreUnratedNo CNA CVSS vector
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02 Description

UltraVNC revision 1206 has multiple off-by-one vulnerabilities in VNC client code connected with improper usage of ClientConnection::ReadString function, which can potentially result code execution.

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
3.92% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 89.9% of scored records. A rank, not a probability.
NVD base score
9.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2019-03-09 00:00Z7 YR AGO
Last updated
2024-09-17 01:16Z2 YR AGO
Reserved
2019-02-12
Assigning CNA
Kaspersky
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
Data version
5.1
Document digest
9939222cc9b6f6fd77f4466e97e5f0f7d9ec9606c90daf7cc0606d37930c57ad

05 Affected products

VendorProductVersionsPlatforms
Kaspersky LabUltraVNC1.2.2.3—

06 References