VULNERABILITY INTELLIGENCE
CVE-2021-1223
CVSS score7.5 HIGH
EPSS probability2.03%
CISA KEVNot currently listed
Published2021-01-13
Last modified2026-08-11
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Description
Multiple Cisco products are affected by a vulnerability in the Snort detection engine that could allow an unauthenticated, remote attacker to bypass a configured file policy for HTTP. The vulnerability is due to incorrect handling of an HTTP range header. An attacker could exploit this vulnerability by sending crafted HTTP packets through an affected device. A successful exploit could allow the attacker to bypass configured file policy for HTTP packets and deliver a malicious payload.
Weakness classification
- psirt@cisco.com: CWE-693
- nvd@nist.gov: NVD-CWE-Other