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

Weakness classification (CWE)

Public proof-of-concept exploits

References

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.