CVE-2010-3035: Cisco IOS XR Border Gateway Protocol (BGP) Denial-of-Service Vulnerability

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: yes — in CISA KEV since 2022-03-25
EPSS: 5.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2010-08-30 · updated 2026-06-16

Description

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.

Affected products

Cisco IOS XR Software: from 3.4.0 through 3.9.1

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
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

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