How severe is CVE-2009-1164?

CVE-2009-1164 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-2009-1164 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-1164?

CVE-2009-1164 primarily affects Cisco Catalyst 3750g. In total, 25 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-1164?

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

When was CVE-2009-1164 published?

CVE-2009-1164 was published on 2009-07-29 and last updated on 2026-06-16.

CVE-2009-1164

CVE-2009-1164 is a high-severity vulnerability in Cisco Catalyst 3750g with a CVSS 2.0 base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-399.

Key facts

Severity: High (CVSS 2.0 base score 7.8)
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-399
Affected product: Cisco Catalyst 3750g
Published: 2009-07-29
Last modified: 2026-06-16

Description

The administrative web interface on the Cisco Wireless LAN Controller (WLC) platform 4.2 before 4.2.205.0 and 5.x before 5.2.178.0, 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 cause a denial of service (device reload) via a malformed response to a (1) HTTP or (2) HTTPS authentication request, aka Bug ID CSCsx03715.

Frequently asked questions

What is CVE-2009-1164?: The administrative web interface on the Cisco Wireless LAN Controller (WLC) platform 4.2 before 4.2.205.0 and 5.x before 5.2.178.0, 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 cause a denial of service (device reload) via a malformed response to a (1) HTTP or (2) HTTPS authentication request, aka Bug ID CSCsx03715.
How severe is CVE-2009-1164?: CVE-2009-1164 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2009-1164 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-1164?: CVE-2009-1164 primarily affects Cisco Catalyst 3750g. In total, 25 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-1164?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2009-1164 published?: CVE-2009-1164 was published on 2009-07-29 and last updated on 2026-06-16.

References

Affected products (25)

cpe:2.3:h:cisco:catalyst_3750g:*:*:*:*:*:*:*:*
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:4.2:*:*:*:*:*:*:*
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:4.2:*:*:*:*:*:*:*
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:4.2:*:*:*:*:*:*:*
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:4.2:*:*:*:*:*:*:*
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:4.2:*:*:*:*:*:*:*
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-2009-1167 — Critical (CVSS 10.0): Unspecified vulnerability on the Cisco Wireless LAN Controller (WLC) platform 4.x before 4.2.205.0 and 5.x before…
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-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…

All CVEs affecting Cisco Catalyst 3750g →

Other CWE-399 (Resource Management Errors) vulnerabilities

CVE-2015-8104 — Critical (CVSS 10.0): The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a…
CVE-2015-0339 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2015-0335 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2015-0333 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2014-4121 — Critical (CVSS 10.0): Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4, 4.5, 4.5.1, and 4.5.2 does not properly parse internationalized…
CVE-2014-0560 — Critical (CVSS 10.0): Use-after-free vulnerability in Adobe Reader and Acrobat 10.x before 10.1.12 and 11.x before 11.0.09 on Windows and OS…

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