CVE-2009-2055

moderate-risk

Published 2009-08-19

Cisco IOS XR 3.4.0 through 3.8.1 allows remote attackers to cause a denial of service (session reset) via a BGP UPDATE message with an invalid attribute, as demonstrated in the wild on 17 August 2009.

Do I need to act?

0.77% chance of exploitation

EPSS score — low exploit probability

CISA KEV: actively exploited in the wild

On the Known Exploited Vulnerabilities catalog — federal agencies must patch

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 5.9/10 Medium

NETWORK / HIGH complexity

Affected Products (19)

Ios Xr

Affected Vendors

Cisco

References (7)

Mailing List http://mailman.nanog.org/pipermail/nanog/2009-August/012719.html

Broken Link http://securitytracker.com/id?1022739

Patch http://www.cisco.com/en/US/products/products_security_advisory09186a0080af150f.s...

Mailing List http://mailman.nanog.org/pipermail/nanog/2009-August/012719.html

Broken Link http://securitytracker.com/id?1022739

Patch http://www.cisco.com/en/US/products/products_security_advisory09186a0080af150f.s...

US Government Resource https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2009-...

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moderate-risk

Severity 18/34 · Moderate

Exploitability 10/34 · Low

Exposure 19/34 · Moderate