Arbitrary file upload in Zenitel Alphacom Xe Audio Server
CVE-2021-40845
The web part of Zenitel AlphaCom XE Audio Server through 11.2.3.10, called AlphaWeb XE, does not restrict file upload in the Custom Scripts section at php/index.php. Neither the content nor extension of the uploaded files is checked, allowing execution of PHP code under the /cmd directory.
Vulnerability class: Unrestricted File Upload
EPSS: 0.047 (90.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Zenitel Alphacom_xe_audio_server
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (VDB Entry, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (Exploit, VDB Entry, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-40845?
- CVE-2021-40845 is a high-severity vulnerability in Zenitel Alphacom Xe Audio Server, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.8/10. Published 2021-09-15.
- How severe is CVE-2021-40845?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2021-40845 known to be exploited?
- 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.