CVE-2021-43934
Elcomplus SmartPtt Unrestricted Upload of File with Dangerous Type
Elcomplus SmartPTT is vulnerable as the backup and restore system does not adequately validate upload requests, enabling a malicious user to potentially upload arbitrary files.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Elcomplus SmartPtt Unrestricted Upload of File with Dangerous Type
Elcomplus SmartPTT is vulnerable as the backup and restore system does not adequately validate upload requests, enabling a malicious user to potentially upload arbitrary files.
- Record
CVE-2021-43934- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-434
- Updated
- 2026-11-02
EUVDEUVD-2021-30796
Elcomplus SmartPTT is vulnerable as the backup and restore system does not adequately validate upload requests, enabling a malicious user to potentially upload arbitrary files.
- Record
EUVD-2021-30796- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-jq86-54q5-fmjr
Elcomplus SmartPTT is vulnerable as the backup and restore system does not adequately validate...
Elcomplus SmartPTT is vulnerable as the backup and restore system does not adequately validate upload requests, enabling a malicious user to potentially upload arbitrary files.
- Record
GHSA-jq86-54q5-fmjr- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-434
- Updated
- 2026-11-02
NVD
Elcomplus SmartPTT is vulnerable as the backup and restore system does not adequately validate upload requests, enabling a malicious user to potentially upload arbitrary files.
- Record
CVE-2021-43934- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-434
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-43934 is a critical vulnerability (CVSS 9.8) in Elcomplus Smartptt, published April 28, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.18%, the 67th percentile. No source names a fixed version.