CVE-2007-0918
The ATOMIC.TCP signature engine in the Intrusion Prevention System (IPS) feature for Cisco IOS 12.4XA, 12.3YA, 12.3T, and other trains allows remote attackers to cause a denial of service (IPS crash and traffic loss) via unspecified manipulations that…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.21%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The ATOMIC.TCP signature engine in the Intrusion Prevention System (IPS) feature for Cisco IOS 12.4XA, 12.3YA, 12.3T, and other trains allows remote attackers to cause a denial of service (IPS crash and traffic loss) via unspecified manipulations that are not properly handled by the regular expression feature, as demonstrated using the 3123.0 (Netbus Pro Traffic) signature.
- CVSS 2.0
- 7.1 HIGHAV:N/AC:M/Au:N/C:N/I:N/A:C
- EPSS
- 3.21% probability · 88th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- cisco/ios
- Source
- cve@mitre.org
EPSS 3.2% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://osvdb.org/33053Broken Link
- http://secunia.com/advisories/24142Third Party Advisory
- http://www.cisco.com/en/US/products/products_security_advisory09186a00807e0a5b.shtmlVendor Advisory
- http://www.cisco.com/en/US/products/products_security_response09186a00807e0a5e.htmlVendor Advisory
- http://www.securityfocus.com/bid/22549Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id?1017631Broken Link, Third Party Advisory, VDB Entry
- http://www.vupen.com/english/advisories/2007/0597Permissions Required, Third Party Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/32474Third Party Advisory, VDB Entry
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5832Broken Link
- http://osvdb.org/33053Broken Link
- http://secunia.com/advisories/24142Third Party Advisory
- http://www.cisco.com/en/US/products/products_security_advisory09186a00807e0a5b.shtmlVendor Advisory
- http://www.cisco.com/en/US/products/products_security_response09186a00807e0a5e.htmlVendor Advisory
- http://www.securityfocus.com/bid/22549Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id?1017631Broken Link, Third Party Advisory, VDB Entry
- http://www.vupen.com/english/advisories/2007/0597Permissions Required, Third Party Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/32474Third Party Advisory, VDB Entry
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5832Broken Link
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.