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CVE-2009-1166

20
FAUCET Score

CVE-2009-1166 describes a denial-of-service vulnerability in the administrative web interface of Cisco Wireless LAN Controller (WLC) platforms, specifically versions 4.x before 4.2.205.0 and 5.x before 5.2.191.0, affecting various Cisco WLC series and modules. An unauthenticated remote attacker can trigger a device reload by sending a specially crafted HTTP or HTTPS request. This vulnerability has a CVSS score of 7.8, indicating high severity due to its network-based attack vector, low attack complexity, and complete availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
3750gCPE matchmatch criteria
cpe:2.3:h:cisco:catalyst:3750g:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.8HIGH

AV:N/AC:L/Au:N/C:N/I:N/A:C

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.60%
Probability of exploitation in next 30 days
EPSS Percentile
73.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0160 is in the 55th percentile among its peer group of 51,485 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

cisco.com / en/US/products/products_security_advisory09186a0080adb3d7.shtml
PatchVendor Advisory
securitytracker.com / id
vupen.com / english/advisories/2009/2021