CVE-2020-3363
A vulnerability in the IPv6 packet processing engine of Cisco Small Business Smart and Managed Switches could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.82%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
A vulnerability in the IPv6 packet processing engine of Cisco Small Business Smart and Managed Switches could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient validation of incoming IPv6 traffic. An attacker could exploit this vulnerability by sending a crafted IPv6 packet through an affected device. A successful exploit could allow the attacker to cause an unexpected reboot of the switch, leading to a DoS condition. This vulnerability is specific to IPv6 traffic. IPv4 traffic is not affected.
- CVSS 3.1
- 8.6 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
- EPSS
- 1.82% probability · 78th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- cisco/sg250x-24 firmware · cisco/sg250x-24p firmware · cisco/sg250x-48 firmware · cisco/sg250x-48p firmware · cisco/sg250-08 firmware · cisco/sg250-08hp firmware · cisco/sg250-10p firmware · cisco/sg250-18 firmware · cisco/sg250-26 firmware · cisco/sg250-26hp firmware · cisco/sg250-26p firmware · cisco/sg250-50 firmware · cisco/sg250-50hp firmware · cisco/sg250-50p firmware · cisco/sf250-24 firmware · cisco/sf250-24p firmware · cisco/sf250-48 firmware · cisco/sf250-48hp firmware · cisco/sg350-10 firmware · cisco/sg350-10p firmware · +40 more
- Source
- psirt@cisco.com
References
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.