PCHelpWareV2 1.0.0.5 contains a denial of service vulnerability that allows local attackers to crash the application by supplying an excessively long string in the Group field. Attackers can paste a buffer overflow payload into the Group property field and click Ok to trigger an application crash.

Attack Vector Local

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction Passive

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Local

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Uvnc PCHelpWareV2 affected
Version Status Constraints
1.0.0.5 affected —

No data.

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Project Subscriptions

Vendors Products
Uvnc Subscribe
Ultravnc Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
http://www.uvnc.eu/download/pchw2/PCHelpWareV2.msi cve-icon cve-icon
https://www.exploit-db.com/exploits/46709 cve-icon cve-icon
https://www.uvnc.com/home.html cve-icon cve-icon
https://www.vulncheck.com/advisories/pchelpwarev2-denial-of-service-via-group-field cve-icon cve-icon
History

Sat, 21 Mar 2026 13:00:00 +0000

Type Values Removed Values Added
Description PCHelpWareV2 1.0.0.5 contains a denial of service vulnerability that allows local attackers to crash the application by supplying an excessively long string in the Group field. Attackers can paste a buffer overflow payload into the Group property field and click Ok to trigger an application crash.
Title PCHelpWareV2 1.0.0.5 Denial of Service via Group Field
First Time appeared Uvnc
Uvnc ultravnc
Weaknesses CWE-787
CPEs cpe:2.3:a:uvnc:ultravnc:1.0.0.5:*:*:*:*:*:*:*
Vendors & Products Uvnc
Uvnc ultravnc
References
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 6.8, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-03-21T12:47:04.862Z

Reserved: 2026-03-21T12:31:58.383Z

Link: CVE-2019-25564

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-03-21T13:16:19.710

Modified: 2026-03-21T13:16:19.710

Link: CVE-2019-25564

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses