Cisco IOx Application Framework Denial of Service Vulnerability
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-400.
Summary
A vulnerability in the Cisco IOx Application Framework of Cisco 809 Industrial Integrated Services Routers (Industrial ISRs), Cisco 829 Industrial ISRs, Cisco CGR 1000 Compute Module, and Cisco IC3000 Industrial Compute Gateway could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient error handling during packet processing. An attacker could exploit this vulnerability by sending a high and sustained rate of crafted TCP traffic to the IOx web server on an affected device. A successful exploit could allow the attacker to cause the IOx web server to stop processing requests, resulting in a DoS condition.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
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 IOS | all versions | — | No fix listed | CNA |
- Cisco IOS VendorCisco Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 7
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:cisco:ios:*:*:*:*:*:*:*:* | before 15.9\(3\)m3 | Vulnerable | Cisco |
| cpe:2.3:h:cisco:809_industrial_integrated_services_router:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:h:cisco:829_industrial_integrated_services_router:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:cgr1000_firmware:*:*:*:*:*:*:*:* | before 1.12.0.3 | Vulnerable | Cisco |
| cpe:2.3:h:cisco:cgr1000:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:ic3000_industrial_compute_gateway_firmware:*:*:*:*:*:*:*:* | before 1.3.2 | Vulnerable | Cisco |
| cpe:2.3:h:cisco:ic3000_industrial_compute_gateway:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
- cpe:2.3:a:cisco:ios:*:*:*:*:*:*:*:* Versions before 15.9\(3\)m3 Vulnerable ·Cisco
- cpe:2.3:h:cisco:809_industrial_integrated_services_router:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:h:cisco:829_industrial_integrated_services_router:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:cgr1000_firmware:*:*:*:*:*:*:*:* Versions before 1.12.0.3 Vulnerable ·Cisco
- cpe:2.3:h:cisco:cgr1000:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:ic3000_industrial_compute_gateway_firmware:*:*:*:*:*:*:*:* Versions before 1.3.2 Vulnerable ·Cisco
- cpe:2.3:h:cisco:ic3000_industrial_compute_gateway:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-1460
- 2026-10-03 Alias added: GHSA-phf8-xfvh-mfwq
References
More Cisco Cgr1000 Firmware vulnerabilities
- TI-2023-06784 Cisco IOx Application Hosting Environment Command Injection Vulnerability CVSS 3.1HIGH 8.8
- TI-2025-14496 Missing brute-force protection in Cisco IOS CVSS 3.1MEDIUM 5.3
Sources
- CVE-2021-1460 · CVE Program
- CVE-2021-1460 · NVD
- FIRST EPSS
- GHSA-phf8-xfvh-mfwq · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences