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Vulnerability Details :

CVE-2026-4962

Summary
Assigner-VulDB
Assigner Org ID-1af790b2-7ee1-4545-860a-a788eba489b5
Published At-27 Mar, 2026 | 17:05
Updated At-27 Mar, 2026 | 22:07
Rejected At-
Credits

UltraVNC Service version.dll uncontrolled search path

A security flaw has been discovered in UltraVNC up to 1.6.4.0. Affected by this issue is some unknown functionality in the library version.dll of the component Service. The manipulation results in uncontrolled search path. The attack needs to be approached locally. This attack is characterized by high complexity. The exploitation is known to be difficult. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:VulDB
Assigner Org ID:1af790b2-7ee1-4545-860a-a788eba489b5
Published At:27 Mar, 2026 | 17:05
Updated At:27 Mar, 2026 | 22:07
Rejected At:
▼CVE Numbering Authority (CNA)
UltraVNC Service version.dll uncontrolled search path

A security flaw has been discovered in UltraVNC up to 1.6.4.0. Affected by this issue is some unknown functionality in the library version.dll of the component Service. The manipulation results in uncontrolled search path. The attack needs to be approached locally. This attack is characterized by high complexity. The exploitation is known to be difficult. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Affected Products
Vendor
n/a
Product
UltraVNC
CPEs
  • cpe:2.3:a:ultravnc:ultravnc:*:*:*:*:*:*:*:*
Modules
  • Service
Versions
Affected
  • 1.6.0
  • 1.6.1
  • 1.6.2
  • 1.6.3
  • 1.6.4.0
Problem Types
TypeCWE IDDescription
CWECWE-427Uncontrolled Search Path
CWECWE-426Untrusted Search Path
Type: CWE
CWE ID: CWE-427
Description: Uncontrolled Search Path
Type: CWE
CWE ID: CWE-426
Description: Untrusted Search Path
Metrics
VersionBase scoreBase severityVector
4.07.3HIGH
CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
3.17.0HIGH
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
3.07.0HIGH
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
2.06.0N/A
AV:L/AC:H/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR
Version: 4.0
Base score: 7.3
Base severity: HIGH
Vector:
CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
Version: 3.1
Base score: 7.0
Base severity: HIGH
Vector:
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
Version: 3.0
Base score: 7.0
Base severity: HIGH
Vector:
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
Version: 2.0
Base score: 6.0
Base severity: N/A
Vector:
AV:L/AC:H/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
reporter
haehanse (VulDB User)
coordinator
VulDB
Timeline
EventDate
Advisory disclosed2026-03-27 00:00:00
VulDB entry created2026-03-27 01:00:00
VulDB entry last update2026-03-27 09:18:07
Event: Advisory disclosed
Date: 2026-03-27 00:00:00
Event: VulDB entry created
Date: 2026-03-27 01:00:00
Event: VulDB entry last update
Date: 2026-03-27 09:18:07
Replaced By
Rejected Reason
References
HyperlinkResource
https://vuldb.com/?id.353839
vdb-entry
https://vuldb.com/?ctiid.353839
signature
permissions-required
https://vuldb.com/?submit.777619
third-party-advisory
https://drive.google.com/file/d/1QC-MrqGsfjr4phEN77krLFZHQN8S48U_/view
exploit
Hyperlink: https://vuldb.com/?id.353839
Resource:
vdb-entry
Hyperlink: https://vuldb.com/?ctiid.353839
Resource:
signature
permissions-required
Hyperlink: https://vuldb.com/?submit.777619
Resource:
third-party-advisory
Hyperlink: https://drive.google.com/file/d/1QC-MrqGsfjr4phEN77krLFZHQN8S48U_/view
Resource:
exploit
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:cna@vuldb.com
Published At:27 Mar, 2026 | 17:16
Updated At:29 Apr, 2026 | 22:09

A security flaw has been discovered in UltraVNC up to 1.6.4.0. Affected by this issue is some unknown functionality in the library version.dll of the component Service. The manipulation results in uncontrolled search path. The attack needs to be approached locally. This attack is characterized by high complexity. The exploitation is known to be difficult. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary4.06.4MEDIUM
CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Secondary3.17.0HIGH
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Secondary2.06.0MEDIUM
AV:L/AC:H/Au:S/C:C/I:C/A:C
Type: Secondary
Version: 4.0
Base score: 6.4
Base severity: MEDIUM
Vector:
CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Type: Secondary
Version: 3.1
Base score: 7.0
Base severity: HIGH
Vector:
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Type: Secondary
Version: 2.0
Base score: 6.0
Base severity: MEDIUM
Vector:
AV:L/AC:H/Au:S/C:C/I:C/A:C
CPE Matches
uvnc
uvnc
>>ultravnc>>Versions from 1.6.0.0(inclusive) to 1.6.4.0(inclusive)
cpe:2.3:a:uvnc:ultravnc:*:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-426Secondarycna@vuldb.com
CWE-427Secondarycna@vuldb.com
CWE ID: CWE-426
Type: Secondary
Source: cna@vuldb.com
CWE ID: CWE-427
Type: Secondary
Source: cna@vuldb.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://drive.google.com/file/d/1QC-MrqGsfjr4phEN77krLFZHQN8S48U_/viewcna@vuldb.com
Permissions Required
https://vuldb.com/?ctiid.353839cna@vuldb.com
Permissions Required
VDB Entry
https://vuldb.com/?id.353839cna@vuldb.com
Third Party Advisory
VDB Entry
https://vuldb.com/?submit.777619cna@vuldb.com
Third Party Advisory
Exploit
VDB Entry
Hyperlink: https://drive.google.com/file/d/1QC-MrqGsfjr4phEN77krLFZHQN8S48U_/view
Source: cna@vuldb.com
Resource:
Permissions Required
Hyperlink: https://vuldb.com/?ctiid.353839
Source: cna@vuldb.com
Resource:
Permissions Required
VDB Entry
Hyperlink: https://vuldb.com/?id.353839
Source: cna@vuldb.com
Resource:
Third Party Advisory
VDB Entry
Hyperlink: https://vuldb.com/?submit.777619
Source: cna@vuldb.com
Resource:
Third Party Advisory
Exploit
VDB Entry

Change History

0
Information is not available yet

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