CVE-2010-4671
The Neighbor Discovery (ND) protocol implementation in the IPv6 stack in Cisco IOS before 15.0(1...
The Neighbor Discovery (ND) protocol implementation in the IPv6 stack in Cisco IOS before 15.0(1)XA5 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 CSCti33534.
Exploit likelihood
What each source reports
NVD Score used
The Neighbor Discovery (ND) protocol implementation in the IPv6 stack in Cisco IOS before 15.0(1)XA5 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 CSCti33534.
- Record
CVE-2010-4671- CVSS 2.0
- 7.8 High
AV:N/AC:L/Au:N/C:N/I:N/A:C - Weakness
- CWE-400
- Updated
- 2026-11-02
CVE List No score
The Neighbor Discovery (ND) protocol implementation in the IPv6 stack in Cisco IOS before 15.0(1)XA5 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 CSCti33534.
- Record
CVE-2010-4671- Updated
- 2026-11-02
EUVDEUVD-2010-4636 No score
The Neighbor Discovery (ND) protocol implementation in the IPv6 stack in Cisco IOS before 15.0(1)XA5 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 CSCti33534.
- Record
EUVD-2010-4636- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-qcfh-5wrf-w2jc No score
The Neighbor Discovery (ND) protocol implementation in the IPv6 stack in Cisco IOS before 15.0(1...
The Neighbor Discovery (ND) protocol implementation in the IPv6 stack in Cisco IOS before 15.0(1)XA5 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 CSCti33534.
- Record
GHSA-qcfh-5wrf-w2jc- Weakness
- CWE-400
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2010-4671 is a high vulnerability (CVSS 7.8) in Cisco Ios, published January 7, 2011. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.62%, the 89th percentile. No source names a fixed version.
References
securityfocus.com/bid/45760
exchange.xforce.ibmcloud.com/vulnerabilities/64589
mirror.fem-net.de/CCC/27C3/mp4-h264-HQ/27c3-3957-en-ipv6_insecurities.mp4
ciscosystems.com/en/US/docs/ios/15_0/15_0x/15_01_XA/rn800xa.pdf
events.ccc.de/congress/2010/Fahrplan/events/3957.en.html
youtube.com/watch?v=00yjWB6gGy8
nvd.nist.gov/vuln/detail/CVE-2010-4671
github.com/advisories/GHSA-qcfh-5wrf-w2jc