VYPR
Unrated severityNVD Advisory· Published Oct 30, 2001· Updated Jun 16, 2026

CVE-2001-0669

CVE-2001-0669

Description

Various Intrusion Detection Systems (IDS) including (1) Cisco Secure Intrusion Detection System, (2) Cisco Catalyst 6000 Intrusion Detection System Module, (3) Dragon Sensor 4.x, (4) Snort before 1.8.1, (5) ISS RealSecure Network Sensor 5.x and 6.x before XPU 3.2, and (6) ISS RealSecure Server Sensor 5.5 and 6.0 for Windows, allow remote attackers to evade detection of HTTP attacks via non-standard "%u" Unicode encoding of ASCII characters in the requested URL.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

13
  • cpe:2.3:a:cisco:catalyst_6000_intrusion_detection_system_module:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:a:cisco:catalyst_6000_intrusion_detection_system_module:*:*:*:*:*:*:*:*
    • (no CPE)
  • cpe:2.3:a:cisco:secure_intrusion_detection_system:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:a:cisco:secure_intrusion_detection_system:*:*:*:*:*:*:*:*
    • (no CPE)
  • cpe:2.3:a:iss:realsecure_network_sensor:5.x:*:*:*:*:*:*:*+ 2 more
    • cpe:2.3:a:iss:realsecure_network_sensor:5.x:*:*:*:*:*:*:*
    • cpe:2.3:a:iss:realsecure_network_sensor:6.x:*:*:*:*:*:*:*
    • (no CPE)range: >=5.x, <=6.x before XPU 3.2
  • cpe:2.3:a:iss:realsecure_server_sensor:5.5:*:*:*:*:*:*:*+ 2 more
    • cpe:2.3:a:iss:realsecure_server_sensor:5.5:*:*:*:*:*:*:*
    • cpe:2.3:a:iss:realsecure_server_sensor:6.0:*:*:*:*:*:*:*
    • (no CPE)range: 5.5 and 6.0 for Windows
  • Snort/Snort2 versions
    cpe:2.3:a:snort:snort:1.8.1:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:a:snort:snort:1.8.1:*:*:*:*:*:*:*
    • (no CPE)range: <1.8.1
  • cpe:2.3:h:enterasys:dragon:4.x:*:*:*:*:*:*:*

Patches

Vulnerability mechanics

References

5

News mentions

0

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