Vulnerability in Cisco 1100-4p_integrated_services_router
CVE-2021-1224
Multiple Cisco products are affected by a vulnerability with TCP Fast Open (TFO) when used in conjunction with the Snort detection engine that could allow an unauthenticated, remote attacker to bypass a configured file policy for HTTP. The…
EPSS: 0.020 (78.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N.
Affected products
- Cisco 1100-4p_integrated_services_router
- Cisco 1100-8p_integrated_services_router
- Cisco 1101-4p_integrated_services_router
- Cisco 1109-2p_integrated_services_router
- Cisco 1109-4p_integrated_services_router
- Cisco 1111x-8p_integrated_services_router
- Cisco 4221_integrated_services_router
- Cisco 4321_integrated_services_router
- Cisco 4331_integrated_services_router
- Cisco 4351_integrated_services_router
Weakness classification (CWE)
Public proof-of-concept exploits
References
- psirt@cisco.com (vendor-advisory, Vendor Advisory)
- psirt@cisco.com (mailing-list)
- psirt@cisco.com (vendor-advisory)
Frequently asked questions
- What is CVE-2021-1224?
- CVE-2021-1224 is a medium-severity vulnerability in Cisco 1100-4p_integrated_services_router, classified under Protection Mechanism Failure. CVSS score: 5.8/10. Published 2021-01-13.
- How severe is CVE-2021-1224?
- Medium severity. CVSS v3 base score is 5.8 out of 10.
- Is CVE-2021-1224 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.