TI-2021-01203 Aliases CVE-2021-1476 GHSA-pw27-8v69-r7p3

Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Command Injection Vulnerability

LOW 32CWE-78Published 2021-04-29 · Updated 2024-11-08

Key facts

Attack vector: Local
Privileges required: High
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-78.

Summary

A vulnerability in the CLI of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, local attacker to execute arbitrary commands on the underlying operating system (OS) of an affected device. The vulnerability is due to insufficient input validation of commands that are supplied by the user. An attacker could exploit this vulnerability by authenticating to a device and submitting crafted input for specific commands. A successful exploit could allow the attacker to execute commands on the underlying OS with root privileges. To exploit this vulnerability, an attacker must have valid administrator-level credentials.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00485 42nd percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Cisco	Cisco Adaptive Security Appliance (ASA) Software	all versions	—	No fix listed	CNA

Cisco Adaptive Security Appliance (ASA) Software VendorCisco Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:a:cisco:secure_firewall_threat_defense::::::::	6.5.0 to before 6.6.4; 6.7.0 to before 6.7.0.2	Vulnerable	Cisco
cpe:2.3:o:cisco:adaptive_security_appliance_software::::::::	9.13 to before 9.13.1.21; 9.14 to before 9.14.2.13; 9.15 to before 9.15.1.10	Vulnerable	Cisco

cpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:* Versions 6.5.0 to before 6.6.4; 6.7.0 to before 6.7.0.2 Vulnerable ·Cisco
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:* Versions 9.13 to before 9.13.1.21; 9.14 to before 9.14.2.13; 9.15 to before 9.15.1.10 Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2021-1476
2026-10-03 Alias added: GHSA-pw27-8v69-r7p3

References

Advisory 1

20210428 Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Command Injection Vulnerability

TI-2025-14628 Buffer overflow in Cisco Secure Firewall Adaptive Security Appliance Software KEVCVSS 3.1CRITICAL 9.9
TI-2016-05454 Buffer overflow in Cisco Adaptive Security Appliance (ASA) Software through 9.4.2.3 on… KEVCVSS 3.1HIGH 8.8
TI-2023-06973 Authentication bypass in Cisco Adaptive Security Appliance Software KEVCVSS 3.1CRITICAL 9.1
TI-2026-82192 Denial of service in Cisco Secure Firewall ASA and FTD SSL VPN KEVCVSS 3.1HIGH 8.6
TI-2026-16533 Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense… KEVCVSS 3.1HIGH 8.6
TI-2025-14657 Missing authorization in Cisco Secure Firewall Adaptive Security Appliance Software KEVCVSS 3.1HIGH 8.6

See all 354 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences