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Vulnerabilities

Vulnerability · CVE-2010-3035

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

Published Aug 30, 2010 · catalog updated Jun 16, 2026 · Cisco IOS XR

Patch now

CVE-2010-3035 is in the CISA known-exploited catalog, due Apr 15, 2022. Confirm Cisco IOS XR against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
High7.5
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
5.67%
Remediation
Remediation guidance
Affected products
cpe cisco/ios xr · vendor Cisco IOS XR · vendor n/a n/a

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe cisco/ios xrversion unspecified
  • vendor Cisco IOS XRversion unspecified
  • vendor n/a n/aversion unspecified

How to fix CVE-2010-3035

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2010-3035 is in the CISA known-exploited catalog, due Apr 15, 2022. Confirm Cisco IOS XR against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply updates per vendor instructions.

What should an analyst verify?

CWE-20: Improper Input Validation. EPSS 5.67%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Cisco security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Aug 30, 2010 · Catalog

    Detected

    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.

  2. Mar 25, 2022 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. Apr 15, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Jun 16, 2026 · Catalog

    Updated

    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.

Sources

  • CISA KEVConfirmed exploitationCVE-2010-3035

    Cisco IOS XR, when BGP is the configured routing feature, allows remote attackers to cause a denial-of-service (DoS).

    cisa.gov
  • CVE.orgVulnerability recordCVE-2010-3035

    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 attrib

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2010-3035

    30-day exploitation probability 5.7%

    first.org
  • NIST NVDVulnerability recordCVE-2010-3035

    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 attrib

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2010-3035

    Cisco IOS XR, when BGP is the configured routing feature, allows remote attackers to cause a denial-of-service (DoS).

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.