CVE DATABASE / CVE-2010-3035
CVE-2010-3035
Cisco IOS XR Border Gateway Protocol (BGP) Denial-of-Service Vulnerability
Confirmed exploited in the wild. Added 2022-03-25.
Federal remediation due 2022-04-15.
Required action: Apply updates per vendor instructions.
Summary
Cisco IOS XR 3.4.0 through 3.9.1, when BGP is enabled, does not properly handle unrecognized transitive attributes, which allows remote attackers to cause a denial of service (peering reset) via a crafted prefix announcement, as demonstrated in the wild in August 2010 with attribute type code 99, aka Bug ID CSCti62211.
CVSS 3.1 breakdown
| Base score | 7.5 (HIGH) |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| Attack vector | NETWORK |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity | NONE |
| Availability | HIGH |
Affected products
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References
- http://mailman.nanog.org/pipermail/nanog/2010-August/024837.html
- http://osvdb.org/67696
- http://secunia.com/advisories/41190
- http://www.cisco.com/en/US/products/products_security_advisory09186a0080b4411f.shtml
- http://www.securitytracker.com/id?1024371
- http://www.vupen.com/english/advisories/2010/2227
- https://exchange.xforce.ibmcloud.com/vulnerabilities/61443
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2010-3035
Data: NIST NVD + CISA KEV. NVD last modified 2026-04-22. Always verify against the vendor advisory before acting.