Unrestricted upload of dangerous file types in C21 Live Encoder and Live Mosaic
Published Jan 17, 2024
10.0
CRITICALCVSS 3.1
EPSS 0.67%
Description
Unrestricted upload of dangerous file types in the C21 Live Encoder and Live Mosaic product, version 5.3. This vulnerability allows a remote attacker to upload different file extensions without any restrictions, resulting in a full system compromise.
Affected products
-
- Version 5.3StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Cires21 | C21 Live Encoder and Live Mosaic | unaffected |
|
- 5.3
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
Vendor solution
The vulnerability has been resolved by the Cires21 team in the latest software version of the affected products, which was released in the last week of November.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
1 other source (CVE.org) ▾
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
YesTechnical Impact
TotalDecision
n/aAssessed May 8, 2025 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 4, 2026.
Score over time
2024-2026- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (6 key points)
Flat stretches are collapsed. Showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 4, 2026 | 0.67% (0.00670) | 50.23th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.67% (0.00670) | 46.95th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.58% (0.00578) | 66.94th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.15% (0.00148) | 52.28th | v3 (v2023.03.01) |
| Jan 25, 2024 | 0.15% (0.00148) | 50.84th | v3 (v2023.03.01) |
| Jan 24, 2024 | 0.05% (0.00047) | 13.98th | v3 (v2023.03.01) |
References (1)
- https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-cires21-products Third Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-cires21-products | Third Party Advisory |
Change history (0)
No recorded changes yet.