CVE-2010-4671
The Neighbor Discovery (ND) protocol implementation in the IPv6 stack in Cisco IOS before 15.0(1)XA5 allows remote attackers to cause a…
- 7.8HighCVSS base score
- 3.6%Exploitation in 30 daysEPSS · top 10% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By mitre
- 1 day later
· 1 day later
Published
- 14 years later
· 14 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | High7.8 | AV:N/AC:L/Au:N/C:N/I:N/A:C |
- EPSS (exploitation in 30 days)
- 3.6% · top 10% of all CVEs (11 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
n/a
- affected n/a
References
References7
- 45760 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- ciscoios-neighbor-discovery-dos(64589) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- http://mirror.fem-net.de/CCC/27C3/mp4-h264-HQ/27c3-3957-en-ipv6_insecurities.mp4 (opens in a new tab)x_refsource_MISCx_transferred
- http://www.ciscosystems.com/en/US/docs/ios/15_0/15_0x/15_01_XA/rn800xa.pdf (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://mirror.fem-net.de/CCC/27C3/mp3-audio-only/27c3-3957-en-ipv6_insecurities.mp3 (opens in a new tab)x_refsource_MISCx_transferred
- http://events.ccc.de/congress/2010/Fahrplan/events/3957.en.html (opens in a new tab)x_refsource_MISCx_transferred
- http://www.youtube.com/watch?v=00yjWB6gGy8 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2010-4636 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2010-4671)Record last updated .