CVE-2021-43404
An issue was discovered in FusionPBX before 4.5.30. The FAX file name may have risky characters.
An issue was discovered in FusionPBX before 4.5.30. The FAX file name may have risky characters.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
An issue was discovered in FusionPBX before 4.5.30. The FAX file name may have risky characters.
- Record
CVE-2021-43404- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 6.5 Medium
AV:N/AC:L/Au:S/C:P/I:P/A:P - Updated
- 2026-11-02
CVE List No score
An issue was discovered in FusionPBX before 4.5.30. The FAX file name may have risky characters.
- Record
CVE-2021-43404- Updated
- 2026-11-02
EUVDEUVD-2021-30339 No score
An issue was discovered in FusionPBX before 4.5.30. The FAX file name may have risky characters.
- Record
EUVD-2021-30339- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-44hm-fgg5-f5ww
An issue was discovered in FusionPBX before 4.5.30. The FAX file name may have risky characters.
An issue was discovered in FusionPBX before 4.5.30. The FAX file name may have risky characters.
- Record
GHSA-44hm-fgg5-f5ww- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-20
- Updated
- 2026-11-02
OSV
An issue was discovered in FusionPBX before 4.5.30. The FAX file name may have risky characters.
- Record
CVE-2021-43404- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-43404 is a high vulnerability (CVSS 8.8) in Fusionpbx, published November 5, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.97%, the 62nd percentile. No source names a fixed version.