CVE-2008-1153
Cisco IOS 12.1, 12.2, 12.3, and 12.4, with IPv4 UDP services and the IPv6 protocol enabled, allows remote attackers to cause a denial of service (device crash and possible blocked interface) via a crafted IPv6 packet to the device.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (5.58%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Cisco IOS 12.1, 12.2, 12.3, and 12.4, with IPv4 UDP services and the IPv6 protocol enabled, allows remote attackers to cause a denial of service (device crash and possible blocked interface) via a crafted IPv6 packet to the device.
- CVSS 2.0
- 7.1 HIGHAV:N/AC:M/Au:N/C:N/I:N/A:C
- EPSS
- 5.58% probability · 93th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- cisco/cisco ios · cisco/ios
- Source
- psirt@cisco.com
EPSS 5.6% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://secunia.com/advisories/29507
- http://www.cisco.com/warp/public/707/cisco-sa-20080326-IPv4IPv6.shtmlExploit, Patch
- http://www.kb.cert.org/vuls/id/936177US Government Resource
- http://www.securityfocus.com/bid/28461
- http://www.securitytracker.com/id?1019713
- http://www.us-cert.gov/cas/techalerts/TA08-087B.htmlUS Government Resource
- http://www.vupen.com/english/advisories/2008/1006/references
- https://exchange.xforce.ibmcloud.com/vulnerabilities/41475
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5860
- http://secunia.com/advisories/29507
- http://www.cisco.com/warp/public/707/cisco-sa-20080326-IPv4IPv6.shtmlExploit, Patch
- http://www.kb.cert.org/vuls/id/936177US Government Resource
- http://www.securityfocus.com/bid/28461
- http://www.securitytracker.com/id?1019713
- http://www.us-cert.gov/cas/techalerts/TA08-087B.htmlUS Government Resource
- http://www.vupen.com/english/advisories/2008/1006/references
- https://exchange.xforce.ibmcloud.com/vulnerabilities/41475
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5860
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.