CVE-2021-1494
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2021
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
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 specific HTTP header parameters. An attacker could exploit this vulnerability by sending crafted HTTP packets through an affected device. A successful exploit could allow the attacker to bypass a configured file policy for HTTP packets and deliver a malicious payload.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Cisco Firepower Threat Defense Software
- Vendor
- Cisco
- Product
- Cisco Firepower Threat Defense Software
- Platforms
- Unknown
- Default status
Unknown
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| N/A | affected | Unavailable | Unavailable | Unavailable | None listed |
Cisco UTD SNORT IPS Engine Software
- Vendor
- Cisco
- Product
- Cisco UTD SNORT IPS Engine Software
- Platforms
- Unknown
- Default status
Unknown
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 16.12.1a | affected | Unavailable | Unavailable | Unavailable | None listed |
| 16.12.2 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 16.12.3 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 16.12.4 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 16.6.1 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 16.6.5 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 16.6.6 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 16.6.7a | affected | Unavailable | Unavailable | Unavailable | None listed |
| 16.6.9 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 17.1.1 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 17.2.1r | affected | Unavailable | Unavailable | Unavailable | None listed |
| 17.3.1a | affected | Unavailable | Unavailable | Unavailable | None listed |
| 17.3.2 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 3.17.0S | affected | Unavailable | Unavailable | Unavailable | None listed |
| 3.17.1S | affected | Unavailable | Unavailable | Unavailable | None listed |
| Fuji-16.9.2 | affected | Unavailable | Unavailable | Unavailable | None listed |
| Fuji-16.9.4 | affected | Unavailable | Unavailable | Unavailable | None listed |
| Fuji-16.9.6 | affected | Unavailable | Unavailable | Unavailable | None listed |
| Fuji-16.9.3 | affected | Unavailable | Unavailable | Unavailable | None listed |
| Fuji-16.9.7 | affected | Unavailable | Unavailable | Unavailable | None listed |
| Fuji-16.9.5 | affected | Unavailable | Unavailable | Unavailable | None listed |
| Denali-16.3.3 | affected | Unavailable | Unavailable | Unavailable | None listed |
| Denali-16.3.9 | affected | Unavailable | Unavailable | Unavailable | None listed |
| Denali-16.3.7 | affected | Unavailable | Unavailable | Unavailable | None listed |
| Denali-16.3.5 | affected | Unavailable | Unavailable | Unavailable | None listed |
| Denali-16.3.4 | affected | Unavailable | Unavailable | Unavailable | None listed |
| Everest-16.6.3 | affected | Unavailable | Unavailable | Unavailable | None listed |
| Everest-16.6.4 | affected | Unavailable | Unavailable | Unavailable | None listed |
| Everest-16.6.2 | affected | Unavailable | Unavailable | Unavailable | None listed |