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

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.

7.5 HIGHEPSS 5.66%⚡ Known Exploited (CISA KEV)NVD: Analyzed

Last updated: 2026-06-16 23:22 UTC

OverviewCVSS details

7.5HIGHCVSS 3.1

Score source: NVD
NVD status: Analyzed
Published: Aug 30, 2010
Assigner: cisco

Affected

ios xr (cisco)

Versions: 3.4.0 through 3.9.1

Exploitation

Public exploit: None listed
CISA KEV: Listed · Mar 25, 2022
KEV due date: Apr 15, 2022
Ransomware use: Unknown
SSVC: Exploitation active · Automatable yes · Impact partial

EPSS · FIRST, scored Nov 7

5.66%chance of exploitation in 30 days

Higher than 93.03% of CVEs

CVSS 3.1 · NVD

7.5High

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 impact: None
Integrity impact: None
Availability impact: High

CVSS 2.0 · NVD

5.0Medium

AV:N/AC:L/Au:N/C:N/I:N/A:P

Attack vector: Network
Attack complexity: Low
Authentication: None
Confidentiality impact: None
Integrity impact: None
Availability impact: Partial

NVD status: Analyzed

Overview Affected Products References

NVD CVE.org

Overview

Severity

Score	Severity	Version	Vector String
7.5	HIGH	3.1NVD	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.0	MEDIUM	2.0NVD	AV:N/AC:L/Au:N/C:N/I:N/A:P

CISA required action

⚡ Known exploited · remediation due Apr 15, 2022

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Details

CVE ID: CVE-2010-3035
Status: Analyzed
Assigner (CNA): cisco
Published: Aug 30, 2010
Last modified: 2026-06-16 23:22 UTC
Weaknesses: CWE-20

Sources

Refreshed hourly from the sources above. Last fetched 2026-11-08 12:45 UTC.