CVE-2009-1167

CVE-2009-1167 is a critical-severity vulnerability in Cisco Catalyst 3750g with a CVSS 2.0 base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

• Severity: Critical (CVSS 2.0 base score 10.0)
• EPSS exploit prediction: 2% (80th percentile)
• Actively exploited: Not listed in CISA KEV
• Affected product: Cisco Catalyst 3750g
• Published: 2009-07-29
• Last modified: 2026-06-16

Description

Unspecified vulnerability on the Cisco Wireless LAN Controller (WLC) platform 4.x before 4.2.205.0 and 5.x before 5.2.191.0, as used in Cisco 1500 Series, 2000 Series, 2100 Series, 4100 Series, 4200 Series, and 4400 Series Wireless Services Modules (WiSM), WLC Modules for Integrated Services Routers, and Catalyst 3750G Integrated Wireless LAN Controllers, allows remote attackers to modify the configuration via a crafted (1) HTTP or (2) HTTPS request, aka Bug ID CSCsy44672.

Frequently asked questions

What is CVE-2009-1167?

Unspecified vulnerability on the Cisco Wireless LAN Controller (WLC) platform 4.x before 4.2.205.0 and 5.x before 5.2.191.0, as used in Cisco 1500 Series, 2000 Series, 2100 Series, 4100 Series, 4200 Series, and 4400 Series Wireless Services Modules (WiSM), WLC Modules for Integrated Services Routers, and Catalyst 3750G Integrated Wireless LAN Controllers, allows remote attackers to modify the configuration via a crafted (1) HTTP or (2) HTTPS request, aka Bug ID CSCsy44672.

How severe is CVE-2009-1167?

CVE-2009-1167 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2009-1167 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-1167?

CVE-2009-1167 primarily affects Cisco Catalyst 3750g. In total, 37 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-1167?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2009-1167 published?

CVE-2009-1167 was published on 2009-07-29 and last updated on 2026-06-16.

References

• http://www.cisco.com/en/US/products/products_security_advisory09186a0080adb3d7.shtml
• http://www.securitytracker.com/id?1022606
• http://www.vupen.com/english/advisories/2009/2021

Affected products (37)

• cpe:2.3:h:cisco:catalyst_3750g:*:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:cisco_1500_wireless_lan_controller:4.1:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:cisco_1500_wireless_lan_controller:4.1m:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:cisco_1500_wireless_lan_controller:4.2:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:cisco_1500_wireless_lan_controller:5.0:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:cisco_1500_wireless_lan_controller:5.1:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:cisco_1500_wireless_lan_controller:5.2:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:cisco_2000_wireless_lan_controller:4.1:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:cisco_2000_wireless_lan_controller:4.1m:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:cisco_2000_wireless_lan_controller:4.2:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:cisco_2000_wireless_lan_controller:5.0:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:cisco_2000_wireless_lan_controller:5.1:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:cisco_2000_wireless_lan_controller:5.2:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:cisco_2100_wireless_lan_controller:4.1:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:cisco_2100_wireless_lan_controller:4.1m:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:cisco_2100_wireless_lan_controller:4.2:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:cisco_2100_wireless_lan_controller:5.0:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:cisco_2100_wireless_lan_controller:5.1:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:cisco_2100_wireless_lan_controller:5.2:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:cisco_4100_wireless_lan_controller:4.1:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:cisco_4100_wireless_lan_controller:4.1m:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:cisco_4100_wireless_lan_controller:4.2:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:cisco_4100_wireless_lan_controller:5.0:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:cisco_4100_wireless_lan_controller:5.1:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:cisco_4100_wireless_lan_controller:5.2:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:cisco_4200_wireless_lan_controller:4.1:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:cisco_4200_wireless_lan_controller:4.1m:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:cisco_4200_wireless_lan_controller:4.2:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:cisco_4200_wireless_lan_controller:5.0:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:cisco_4200_wireless_lan_controller:5.1:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:cisco_4200_wireless_lan_controller:5.2:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:cisco_4400_wireless_lan_controller:4.1:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:cisco_4400_wireless_lan_controller:4.1m:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:cisco_4400_wireless_lan_controller:4.2:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:cisco_4400_wireless_lan_controller:5.0:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:cisco_4400_wireless_lan_controller:5.1:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:cisco_4400_wireless_lan_controller:5.2:*:*:*:*:*:*:*

More vulnerabilities in Cisco Catalyst 3750g

• CVE-2009-1165 — High (CVSS 7.8): Memory leak on the Cisco Wireless LAN Controller (WLC) platform 4.x before 4.2.205.0, 5.1 before 5.1.163.0, and 5.0 and…
• CVE-2009-1164 — High (CVSS 7.8): The administrative web interface on the Cisco Wireless LAN Controller (WLC) platform 4.2 before 4.2.205.0 and 5.x…
• CVE-2012-1338 — Medium (CVSS 6.3): Cisco IOS 15.0 and 15.1 on Catalyst 3560 and 3750 series switches allows remote authenticated users to cause a denial…

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