VulnerabilityModified
CVE-1999-1306
Cisco IOS 9.1 and earlier does not properly handle extended IP access lists when the IP route cache is enabled and the "established" keyword is set, which could allow attackers to bypass filters.
HIGH 7.5EPSS 1.39%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.39%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Cisco IOS 9.1 and earlier does not properly handle extended IP access lists when the IP route cache is enabled and the "established" keyword is set, which could allow attackers to bypass filters.
- CVSS 2.0
- 7.5 HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
- EPSS
- 1.39% probability · 71th percentile
- CISA KEV
- Not listed
- Affected
- cisco/ios
- Source
- cve@mitre.org
References
- http://www.cert.org/advisories/CA-1992-20.htmlPatch, Third Party Advisory, US Government Resource
- http://www.cert.org/advisories/CA-1992-20.htmlPatch, Third Party Advisory, US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.