CVE-2010-3035

CVSS 3.1 High 7.5Known exploited (CISA KEV)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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.

Key data

CVSS 3.1 High 7.5

Score published by CISA-ADP in the CVE record.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack vector: Network
The vulnerable component can be reached over a network, possibly from the Internet.
Attack complexity: Low
No special conditions are needed. The attack can be repeated at will.
Privileges required: None
No account or privileges are needed.
User interaction: None
No action from any user is needed.
Scope: Unchanged
The impact stays within the vulnerable component.
Confidentiality impact: None
No effect on the secrecy of data.
Integrity impact: None
No effect on the trustworthiness of data.
Availability impact: High
Serious or total effect on availability.

Metric	Value	What it means
Attack vector	Network	The vulnerable component can be reached over a network, possibly from the Internet.
Attack complexity	Low	No special conditions are needed. The attack can be repeated at will.
Privileges required	None	No account or privileges are needed.
User interaction	None	No action from any user is needed.
Scope	Unchanged	The impact stays within the vulnerable component.
Confidentiality impact	None	No effect on the secrecy of data.
Integrity impact	None	No effect on the trustworthiness of data.
Availability impact	High	Serious or total effect on availability.

CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and is used by permission. Each CVSS score on this site is shown together with its vector string, as published in the CVE record by the source named next to it. Learn more at first.org/cvss.

EPSS

Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.

Score: 0.05668 (5.7% probability)
Percentile: 93.0%
Scores of: Nov 10, 2026
Model: v2026.06.15

CISA Known Exploited Vulnerabilities

This CVE is listed in the CISA KEV catalog.

Name in the catalog: Cisco IOS XR Border Gateway Protocol (BGP) Denial-of-Service Vulnerability
Added to the catalog: Mar 25, 2022
Federal due date: Apr 15, 2022

CISA assessment as of Nov 8, 2024

Stakeholder-Specific Vulnerability Categorization (SSVC) decision points added by CISA.

Exploitation: Recorded by CISA as active
Automatable: yes
Technical impact: partial

References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

ciscoiosxr-bgp-packet-dos(61443) (exchange.xforce.ibmcloud.com)vdb-entry
1024371 (securitytracker.com)vdb-entry
20100827 Cisco IOS XR Software Border Gateway Protocol Vulnerability (cisco.com)vendor-advisory
[nanog] 20100827 Did your BGP crash today? (mailman.nanog.org)mailing-list
41190 (secunia.com)third-party-advisory
ADV-2010-2227 (vupen.com)vdb-entry
67696 (osvdb.org)vdb-entry

Timeline

ID reservedAug 17, 2010
Record publishedAug 30, 2010
Added to CISA KEVMar 25, 2022
Record last updatedJan 12, 2026

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About CubePath

CubePath is a cloud provider with data centers in Europe and the United States. It offers VPS, bare metal servers and DDoS protection.

Cloud VPS DDoS protection

Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 19:30 UTC. Sources and licenses