Cisco IOS 12.0 through 12.3YL, with BGP enabled and running the bgp log-neighbor-changes command, allows remote attackers to cause a denial…

published 2005-02-06 21y ago modified 2026-06-16 4mo ago also EUVD-2005-0197

cvss: 5.0; version 2.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 4.1%; EPSS 4.1% chance of exploitation in 30 days, percentile 90%
public exploits: 0; none known

Cisco IOS 12.0 through 12.3YL, with BGP enabled and running the bgp log-neighbor-changes command, allows remote attackers to cause a denial of service (device reload) via a malformed BGP packet.

Patch / fix

links 3

cisco.com/warp/public/707/cisco-sa-20050126-bgp.shtml advisory
kb.cert.org/vuls/id/689326 advisory
us-cert.gov/cas/techalerts/TA05-026A.html advisory

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Exploit prediction

4.09% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-14).

CVSS scores

assigned by	version	score	vector
NVD	2.0	5.0	AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Technology feeds

Cisco IOS rss critical rss

References

cisco.com /warp/public/707/cisco-sa-20050126-bgp.shtml
vendor-advisory, patch
kb.cert.org /vuls/id/689326
third-party-advisory, patch, us-government-resource
us-cert.gov /cas/techalerts/TA05-026A.html
third-party-advisory, patch, us-government-resource
secunia.com /advisories/14034
third-party-advisory
securitytracker.com /id?1013013
vdb-entry
oval.cisecurity.org /repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5652
vdb-entry, signature
exchange.xforce.ibmcloud.com /vulnerabilities/19074
vdb-entry

Sources

CVE List CVE-2005-0196
NVD CVE-2005-0196

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