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CVE-2009-1165

20
FAUCET Score

CVE-2009-1165 describes a memory leak vulnerability in specific versions of Cisco Wireless LAN Controllers (WLC) across various product series. This flaw allows unauthenticated remote attackers to trigger a denial of service by initiating SSH management connections, leading to memory exhaustion and device reloads. With a CVSS score of 7.8, it is considered highly severe due to its network-based attack vector and critical impact on availability. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:h:cisco:catalyst_3750g:*:*:*:*:*:*:*:*
4.1CPE matchmatch criteria
cpe:2.3:h:cisco:cisco_1500_wireless_lan_controller:4.1:*:*:*:*:*:*:*
4.1mCPE matchmatch criteria
cpe:2.3:h:cisco:cisco_1500_wireless_lan_controller:4.1m:*:*:*:*:*:*:*
4.2CPE matchmatch criteria
cpe:2.3:h:cisco:cisco_1500_wireless_lan_controller:4.2:*:*:*:*:*:*:*
5.0CPE matchmatch criteria
cpe:2.3:h:cisco:cisco_1500_wireless_lan_controller:5.0:*:*:*:*:*:*:*

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
1.62%
Probability of exploitation in next 30 days
EPSS Percentile
73.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0162 is in the 56th 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
securityfocus.com / bid/35817
securitytracker.com / id
vupen.com / english/advisories/2009/2021