The Neighbor Discovery (ND) protocol implementation in the IPv6 stack on Cisco Adaptive Security Appliances (ASA) 5500 series devices with software 8.2(3) and earlier, and Cisco PIX Security Appliances devices, allows remote attackers to cause a denial of service (CPU consumption and device hang) by sending many Router Advertisement (RA) messages with different source addresses, as demonstrated by the flood_router6 program in the thc-ipv6 package, aka Bug ID CSCti24526
Published Jan 7, 2011
7.8
HIGHCVSS 2.0
EPSS 3.21%
Description
The Neighbor Discovery (ND) protocol implementation in the IPv6 stack on Cisco Adaptive Security Appliances (ASA) 5500 series devices with software 8.2(3) and earlier, and Cisco PIX Security Appliances devices, allows remote attackers to cause a denial of service (CPU consumption and device hang) by sending many Router Advertisement (RA) messages with different source addresses, as demonstrated by the flood_router6 program in the thc-ipv6 package, aka Bug ID CSCti24526.
Affected products
No data.
- ≤ 8.2\(3\)
- 7.0
- 7.0\(0\)
- 7.0\(2\)
- 7.0\(4\)
- 7.0\(5\)
- 7.0\(5.2\)
- 7.0\(6.7\)
- 7.0.1
- 7.0.1.4
- 7.0.2
- 7.0.4
- 7.0.4.3
- 7.0.5
- 7.0.6
- 7.0.7
- 7.0.8
- 7.0.8
- 7.1
- 7.1\(2\)
- 7.1\(2.5\)
- 7.1\(2.27\)
- 7.1\(2.48\)
- 7.1\(2.49\)
- 7.1\(5\)
- 7.1.1
- 7.1.2
- 7.2
- 7.2\(1\)
- 7.2\(1.22\)
- 7.2\(2\)
- 7.2\(2.5\)
- 7.2\(2.7\)
- 7.2\(2.8\)
- 7.2\(2.10\)
- 7.2\(2.14\)
- 7.2\(2.15\)
- 7.2\(2.16\)
- 7.2\(2.17\)
- 7.2\(2.18\)
- 7.2\(2.19\)
- 7.2\(2.48\)
- 7.2.1
- 7.2.2
- 7.2.3
- 7.2.4
- 7.2.5
- 8.0
- 8.0.2
- 8.0.3
- 8.0.4
- 8.0.5
- 8.2\(1\)
- 8.2\(2\)
- 8.2.1
- 8.2.2
- 8.2.2
- n/a
- n/a
- n/a
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 | 3.21% (0.03212) | 87.74th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.13% (0.03125) | 86.13th | v5 (v2026.06.15) |
| Mar 17, 2025 | 1.45% (0.01448) | 79.42th | v4 (v2025.03.14) |
| Dec 12, 2024 | 2.89% (0.02889) | 91.14th | v3 (v2023.03.01) |
| Jul 18, 2024 | 2.89% (0.02889) | 90.90th | v3 (v2023.03.01) |
| Mar 7, 2023 | 4.12% (0.04121) | 90.82th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.41% (0.01408) | 72.89th | v2 (v2022.01.01) |
| Mar 2, 2023 | 1.41% (0.01408) | 72.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.41% (0.01408) | 70.87th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.41% (0.01408) | 49.94th | v2 (v2022.01.01) |
References (8)
- http://events.ccc.de/congress/2010/Fahrplan/events/3957.en.html x_refsource_MISCExploit
- http://mirror.fem-net.de/CCC/27C3/mp3-audio-only/27c3-3957-en-ipv6_insecurities.mp3 x_refsource_MISCExploit
- http://mirror.fem-net.de/CCC/27C3/mp4-h264-HQ/27c3-3957-en-ipv6_insecurities.mp4 x_refsource_MISC
- http://www.cisco.com/en/US/docs/security/asa/asa82/release/notes/asarn82.pdf x_refsource_CONFIRM
- http://www.securityfocus.com/bid/45760 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id?1024963 vdb-entryx_refsource_SECTRACK
- http://www.youtube.com/watch?v=00yjWB6gGy8 x_refsource_MISCExploit
- https://exchange.xforce.ibmcloud.com/vulnerabilities/64598 vdb-entryx_refsource_XF
| Link | Providers | Tags |
|---|---|---|
| http://events.ccc.de/congress/2010/Fahrplan/events/3957.en.html | x_refsource_MISCExploit | |
| http://mirror.fem-net.de/CCC/27C3/mp3-audio-only/27c3-3957-en-ipv6_insecurities.mp3 | x_refsource_MISCExploit | |
| http://mirror.fem-net.de/CCC/27C3/mp4-h264-HQ/27c3-3957-en-ipv6_insecurities.mp4 | x_refsource_MISC | |
| http://www.cisco.com/en/US/docs/security/asa/asa82/release/notes/asarn82.pdf | x_refsource_CONFIRM | |
| http://www.securityfocus.com/bid/45760 | vdb-entryx_refsource_BID | |
| http://www.securitytracker.com/id?1024963 | vdb-entryx_refsource_SECTRACK | |
| http://www.youtube.com/watch?v=00yjWB6gGy8 | x_refsource_MISCExploit | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/64598 | vdb-entryx_refsource_XF |
Change history (0)
No recorded changes yet.