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 5.2 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 (memory consumption and device reload) via SSH management connections, aka Bug ID CSCsw40789
Published Jul 29, 2009
7.8
HIGHCVSS 2.0
EPSS 1.62%
Description
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 5.2 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 (memory consumption and device reload) via SSH management connections, aka Bug ID CSCsw40789.
Affected products
No data.
- n/a
- 4.1
- 4.1m
- 4.2
- 5.0
- 5.1
- 5.2
- 4.1
- 4.1m
- 4.2
- 5.0
- 5.1
- 5.2
- 4.1
- 4.1m
- 4.2
- 5.0
- 5.1
- 5.2
- 4.1
- 4.1m
- 4.2
- 5.0
- 5.1
- 5.2
- 4.1
- 4.1m
- 4.2
- 5.0
- 5.1
- 5.2
- 4.1
- 4.1m
- 4.2
- 5.0
- 5.1
- 5.2
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/I:N/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.62% (0.01619) | 75.19th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.62% (0.01619) | 72.86th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.64% (0.00644) | 68.91th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.68% (0.00676) | 80.55th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.68% (0.00676) | 79.24th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.68% (0.00676) | 76.75th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.21% (0.01213) | 66.61th | v2 (v2022.01.01) |
| Feb 17, 2023 | 1.21% (0.01213) | 66.22th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.21% (0.01213) | 64.21th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.21% (0.01213) | 40.54th | v2 (v2022.01.01) |
References (4)
- http://www.cisco.com/en/US/products/products_security_advisory09186a0080adb3d7.shtml vendor-advisoryx_refsource_CISCOPatchVendor Advisory
- http://www.securityfocus.com/bid/35817 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id?1022605 vdb-entryx_refsource_SECTRACK
- http://www.vupen.com/english/advisories/2009/2021 vdb-entryx_refsource_VUPEN
| Link | Providers | Tags |
|---|---|---|
| http://www.cisco.com/en/US/products/products_security_advisory09186a0080adb3d7.shtml | vendor-advisoryx_refsource_CISCOPatchVendor Advisory | |
| http://www.securityfocus.com/bid/35817 | vdb-entryx_refsource_BID | |
| http://www.securitytracker.com/id?1022605 | vdb-entryx_refsource_SECTRACK | |
| http://www.vupen.com/english/advisories/2009/2021 | vdb-entryx_refsource_VUPEN |
Change history (0)
No recorded changes yet.