What is CVE-2010-3035?

CVE-2010-3035 is a high-severity vulnerability in Cisco iOS Xr. CVSS score: 7.5/10. Published 2010-08-30.

How severe is CVE-2010-3035?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2010-3035 known to be exploited?

Yes. CVE-2010-3035 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-03-25), indicating it is being actively exploited. 3 public proof-of-concept repositories are indexed.

Vulnerability in Cisco iOS Xr

CVE-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 attribute type code 99, aka Bug ID CSCti62211.

Published 2010-08-30 · last modified 2026-06-16.

CVSS v3 metric

CVSS v3 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.

EPSS exploit prediction

EPSS: 0.057 (92.9th percentile), scored 2026-10-19.

Low probability of exploitation in the next 30 days, but still tracked. 93rd percentile — 92.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.057 · newest: 0.057 · change: 0.000

Affected products

Cisco iOS Xr

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2022-03-25. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2022-04-15.

Required action: Apply updates per vendor instructions.

Public proof-of-concept exploits

References

exchange.xforce.ibmcloud.com/vulnerabilities/61443 (VDB Entry, vdb-entry, Vendor Advisory)
www.securitytracker.com/id (VDB Entry, Third Party Advisory, vdb-entry, Broken Link)
www.cisco.com/en/US/products/products_security_advisory09186a0080b4411f.shtml (vendor-advisory, Broken Link, Vendor Advisory)
mailman.nanog.org/pipermail/nanog/2010-August/024837.html (mailing-list, Mailing List)
secunia.com/advisories/41190 (Broken Link, third-party-advisory)
www.vupen.com/english/advisories/2010/2227 (vdb-entry, Broken Link)
osvdb.org/67696 (vdb-entry, Broken Link)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)

Frequently asked questions

What is CVE-2010-3035?: CVE-2010-3035 is a high-severity vulnerability in Cisco iOS Xr. CVSS score: 7.5/10. Published 2010-08-30.
How severe is CVE-2010-3035?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2010-3035 known to be exploited?: Yes. CVE-2010-3035 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-03-25), indicating it is being actively exploited. 3 public proof-of-concept repositories are indexed.