CVE-2020-3297
A vulnerability in session management for the web-based interface of Cisco Small Business Smart and Managed Switches could allow an unauthenticated, remote attacker to defeat authentication protections and gain unauthorized access to the management…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.04%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
A vulnerability in session management for the web-based interface of Cisco Small Business Smart and Managed Switches could allow an unauthenticated, remote attacker to defeat authentication protections and gain unauthorized access to the management interface. The attacker could obtain the privileges of the highjacked session account, which could include administrator privileges on the device. The vulnerability is due to the use of weak entropy generation for session identifier values. An attacker could exploit this vulnerability to determine a current session identifier through brute force and reuse that session identifier to take over an ongoing session. In this way, an attacker could take actions within the management interface with privileges up to the level of the administrative user.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 3.04% probability · 87th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-287
- 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
EPSS 3.0% 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.