CVE-2020-15261

Unquoted service path vulnerability on Veyon

MEDIUM
6.7
CVSS Score
Published: October 19, 2020 at 09:30 PM UTC
Updated: June 17, 2026 at 02:56 AM UTC
1 product affected across 1 vendorVeyon· also runs on 1 platform

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Severity
MEDIUM6.7
Exploit prediction
EPSS 11%

Description

On Windows the Veyon Service before version 4.4.2 contains an unquoted service path vulnerability, allowing locally authenticated users with administrative privileges to run malicious executables with LocalSystem privileges. Since Veyon users (both students and teachers) usually don't have administrative privileges, this vulnerability is only dangerous in anyway unsafe setups. The problem has been fixed in version 4.4.2. As a workaround, the exploitation of the vulnerability can be prevented by revoking administrative privileges from all potentially untrustworthy users.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 0.11.5v < 4.4.2
Affected range stops below 0.11.5, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.4.2, so it looks safe — our inference, not a vendor statement
microsoft-windows (environment)

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (6)

x_refsource_MISCIssue TrackingThird Party Advisory
https://github.com/veyon/veyon/issues/657
x_refsource_MISCExploitThird Party AdvisoryVDB Entry
https://www.exploit-db.com/exploits/48246
x_refsource_MISCExploitThird Party AdvisoryVDB Entry
https://www.exploit-db.com/exploits/49925

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-428

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