Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Remote Code Execution Vulnerability
Published Sep 23, 2020
7.2
HIGHCVSS 3.1
EPSS 4.12%
Description
A vulnerability in the implementation of the Lua interpreter integrated in Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, remote attacker to execute arbitrary code with root privileges on the underlying Linux operating system of an affected device. The vulnerability is due to insufficient restrictions on the allowed Lua function calls within the context of user-supplied Lua scripts. A successful exploit could allow the attacker to trigger a heap overflow condition and execute arbitrary code with root privileges on the underlying Linux operating system of an affected device.
Affected products
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||
|---|---|---|---|---|---|---|
| Cisco | Cisco Adaptive Security Appliance (ASA) Software | n/a |
|
Configuration 1
- < 9.6.4.36
- ≥ 9.7 · < 9.8.4.15
- ≥ 9.9 · < 9.9.2.61
- ≥ 9.10 · < 9.10.1.32
- ≥ 9.12 · < 9.12.3
- ≥ 9.13 · < 9.13.1.4
- ≥ 9.14 · < 9.14.2.7
- ≥ 9.15 · < 9.15.1.4
Configuration 2
- < 6.2.3.16
- ≥ 6.3.0 · < 6.3.0.6
- ≥ 6.4.0 · < 6.4.0.7
- ≥ 6.5.0 · < 6.5.0.2
Configuration 3
- n/a
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
AV:N/AC:L/Au:S/C:C/I:C/A:C
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
TotalDecision
n/aAssessed Nov 13, 2024 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (16 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 4.12% (0.04122) | 90.48th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.95% (0.03951) | 89.04th | v5 (v2026.06.15) |
| May 18, 2026 | 3.77% (0.03769) | 88.17th | v4 (v2025.03.14) |
| Mar 30, 2025 | 5.77% (0.05769) | 89.54th | v4 (v2025.03.14) |
| Mar 29, 2025 | 10.35% (0.10352) | 88.57th | v4 (v2025.03.14) |
| Mar 17, 2025 | 5.77% (0.05769) | 89.80th | v4 (v2025.03.14) |
| Jul 20, 2024 | 0.17% (0.00170) | 54.43th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.17% (0.00170) | 52.94th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.14% (0.00145) | 48.66th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.16% (0.01156) | 61.37th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.16% (0.01156) | 58.36th | v2 (v2022.01.01) |
| Feb 4, 2022 | 15.36% (0.15362) | 92.49th | v2 (v2022.01.01) |
| Feb 3, 2022 | 3.99% (0.03991) | 73.89th | v5 (v2026.06.15) |
| Jan 6, 2022 | 3.99% (0.03991) | 73.67th | v1 |
| Sep 1, 2021 | 0.92% (0.00918) | 60.61th | v1 |
| Apr 14, 2021 | 0.92% (0.00918) | 0.00th | v1 |
References (1)
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20191112-asa-ftd-lua-rce vendor-advisoryx_refsource_CISCOPatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20191112-asa-ftd-lua-rce | vendor-advisoryx_refsource_CISCOPatchVendor Advisory |
Change history (0)
No recorded changes yet.