The Network Processing Unit (NPU) in the Cisco Wireless LAN Controller (WLC) before 3.2.171.5, 4.0.x before 4.0.206.0, and 4.1.x allows remote attackers on a local wireless network to cause a denial of service (loss of packet forwarding) via (1) crafted SNAP packets, (2) malformed 802.11 traffic, or (3) packets with certain header length values, aka Bug IDs CSCsg15901 and CSCsh10841
Published Apr 16, 2007
6.1
MEDIUMCVSS 2.0
EPSS 1.21%
Description
The Network Processing Unit (NPU) in the Cisco Wireless LAN Controller (WLC) before 3.2.171.5, 4.0.x before 4.0.206.0, and 4.1.x allows remote attackers on a local wireless network to cause a denial of service (loss of packet forwarding) via (1) crafted SNAP packets, (2) malformed 802.11 traffic, or (3) packets with certain header length values, aka Bug IDs CSCsg15901 and CSCsh10841.
Affected products
No data.
- ≥ 3.2 · < 3.2.171.5
- ≥ 4.0 · < 4.0.206.0
- ≥ 4.1 · < 4.1.171.0
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:A/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 (15 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.21% (0.01210) | 67.32th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.21% (0.01210) | 64.32th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.76% (0.00761) | 71.63th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.00% (0.00997) | 84.27th | v3 (v2023.03.01) |
| Mar 27, 2024 | 1.00% (0.00997) | 83.25th | v3 (v2023.03.01) |
| Feb 18, 2024 | 0.91% (0.00907) | 82.27th | v3 (v2023.03.01) |
| Jan 11, 2024 | 0.93% (0.00933) | 81.30th | v3 (v2023.03.01) |
| Dec 4, 2023 | 1.01% (0.01015) | 81.98th | v3 (v2023.03.01) |
| Sep 18, 2023 | 0.98% (0.00979) | 81.62th | v3 (v2023.03.01) |
| Apr 22, 2023 | 0.92% (0.00916) | 80.55th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.85% (0.00846) | 79.59th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.32% (0.01319) | 71.27th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.32% (0.01319) | 71.23th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.32% (0.01319) | 69.22th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.32% (0.01319) | 44.98th | v2 (v2022.01.01) |
References (7)
- http://securitytracker.com/id?1017908 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- http://www.cisco.com/warp/public/707/cisco-sa-20070412-wlc.shtml vendor-advisoryx_refsource_CISCOPatchVendor Advisory
- http://www.osvdb.org/34137 vdb-entryx_refsource_OSVDBBroken Link
- http://www.osvdb.org/34139 vdb-entryx_refsource_OSVDBBroken Link
- http://www.securityfocus.com/bid/23461 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.vupen.com/english/advisories/2007/1368 vdb-entryx_refsource_VUPENThird Party Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/33609 vdb-entryx_refsource_XFThird Party AdvisoryVDB Entry
| Link | Providers | Tags |
|---|---|---|
| http://securitytracker.com/id?1017908 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry | |
| http://www.cisco.com/warp/public/707/cisco-sa-20070412-wlc.shtml | vendor-advisoryx_refsource_CISCOPatchVendor Advisory | |
| http://www.osvdb.org/34137 | vdb-entryx_refsource_OSVDBBroken Link | |
| http://www.osvdb.org/34139 | vdb-entryx_refsource_OSVDBBroken Link | |
| http://www.securityfocus.com/bid/23461 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| http://www.vupen.com/english/advisories/2007/1368 | vdb-entryx_refsource_VUPENThird Party Advisory | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/33609 | vdb-entryx_refsource_XFThird Party AdvisoryVDB Entry |
Change history (0)
No recorded changes yet.