CVE-2025-34101
CVE-2025-34101 is a critical-severity vulnerability with a CVSS 4.0 base score of 9.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.
Key facts
- Severity: Critical (CVSS 4.0 base score 9.3)
- EPSS exploit prediction: 3% (86th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-21036
- Weakness: CWE-20
- Published:
- Last modified:
Description
An unauthenticated command injection vulnerability exists in Serviio Media Server versions 1.4 through 1.8 on Windows, in the /rest/action API endpoint exposed by the console component (default port 23423). The checkStreamUrl method accepts a VIDEO parameter that is passed unsanitized to a call to cmd.exe, enabling arbitrary command execution under the privileges of the web server. No authentication is required to exploit this issue, as the REST API is exposed by default and lacks access controls.
Frequently asked questions
- What is CVE-2025-34101?
- An unauthenticated command injection vulnerability exists in Serviio Media Server versions 1.4 through 1.8 on Windows, in the /rest/action API endpoint exposed by the console component (default port 23423). The checkStreamUrl method accepts a VIDEO parameter that is passed unsanitized to a call to cmd.exe, enabling arbitrary command execution under the privileges of the web server. No authentication is required to exploit this issue, as the REST API is exposed by default and lacks access controls.
- How severe is CVE-2025-34101?
- CVE-2025-34101 has a CVSS 4.0 base score of 9.3, rated critical severity.
- Is CVE-2025-34101 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2025-34101?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- Does CVE-2025-34101 have an EU (EUVD) identifier?
- Yes. CVE-2025-34101 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-21036.
- When was CVE-2025-34101 published?
- CVE-2025-34101 was published on 2025-07-10 and last updated on 2026-06-17.
References
- https://fortiguard.fortinet.com/encyclopedia/ips/44042
- https://packetstorm.news/files/id/142387
- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/http/serviio_checkstreamurl_cmd_exec.rb
- https://vulncheck.com/advisories/serviio-media-server-unauthenticated-command-injection
- https://www.exploit-db.com/exploits/42023
- https://www.zeroscience.mk/en/vulnerabilities/ZSL-2017-5408.php
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