Vulnerability in Fusionpbx
CVE-2021-43405
An issue was discovered in FusionPBX before 4.5.30. The fax_extension may have risky characters (it is not constrained to be numeric).
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.356 (98.4th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.356 · newest: 0.356 · change: 0.000
Affected products
Public proof-of-concept exploits
References
- github.com/fusionpbx/fusionpbx/commit/2d2869c1a1e874c46a8c3c5475614ce769bbbd59 (Patch, Third Party Advisory)
- packetstormsecurity.com/files/164795/FusionPBX-4.5.29-Remote-Code-Execution.html (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-43405?
- CVE-2021-43405 is a high-severity vulnerability in Fusionpbx. CVSS score: 8.8/10. Published 2021-11-05.
- How severe is CVE-2021-43405?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2021-43405 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.