Is CVE-2010-3035 being actively exploited?

Yes. CVE-2010-3035 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added on March 25, 2022.

What is the CVSS score for CVE-2010-3035?

CVE-2010-3035 has a CVSS 3.1 base score of 7.5 (HIGH).

CVE-2010-3035

HIGH · CVSS 7.5CISA KEV: actively exploitedEPSS 5.7%EU EUVD: exploited

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 facts

CVSS score: 7.5 (v3.1)
Severity: HIGH
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS score: 5.7% (93th percentile)
In CISA KEV: Yes, added March 25, 2022
In EU EUVD: Yes (EUVD-2010-3037)
Published: August 30, 2010
NVD last modified: June 16, 2026
Status: Analyzed

CISA Known Exploited Vulnerability

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

Added to the KEV catalog on March 25, 2022; federal remediation due April 15, 2022.

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2010-3037 in the EU Vulnerability Database. ENISA flags it as known exploited. Last updated in EUVD on January 12, 2026.

View on the EU Vulnerability Database

Affected products

cisco / ios xr

References

http://mailman.nanog.org/pipermail/nanog/2010-August/024837.html(Mailing List)
http://osvdb.org/67696(Broken Link)
http://secunia.com/advisories/41190(Broken Link)
http://www.cisco.com/en/US/products/products_security_advisory09186a0080b4411f.shtml(Broken Link, Vendor Advisory)
http://www.securitytracker.com/id?1024371(Broken Link, Third Party Advisory, VDB Entry)
http://www.vupen.com/english/advisories/2010/2227(Broken Link)
https://exchange.xforce.ibmcloud.com/vulnerabilities/61443(VDB Entry, Vendor Advisory)
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2010-3035(US Government Resource)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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