CVE-2020-15261
highpriority · track · 41EPSS 0.113 · 96 %ileexploit · PoCEUUSEPSS · scored 2026-10-26
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.3–8
weaknesses
The CWE weakness classes this flaw belongs to.
exploits (1)
Public proof-of-concept and weaponised exploit code.
- EDB-49925Veyon 4.4.1 - 'VeyonService' Unquoted Service PathPoC · exploit_db
affected products (2)
Products and version ranges known to be affected.
also known as (2)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (19)
External citations — patches, advisories, analysis.
- https://github.com/veyon/veyon/commit/f231ec511b9a09f43f49b2c7bb7c60b8046276b1cnnvd
- https://github.com/veyon/veyon/issues/657cnnvd
- https://github.com/veyon/veyon/security/advisories/GHSA-c8cc-x786-hqqpcnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2020-15261cnnvd
- https://packetstormsecurity.com/files/162873/Veyon-4.4.1-Unquoted-Service-Path.htmlcnnvd
- https://www.exploit-db.com/exploits/48246cnnvd
- https://www.exploit-db.com/exploits/49925cnnvd
- http://packetstormsecurity.com/files/162873/Veyon-4.4.1-Unquoted-Service-Path.htmlenisa_euvd
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