No exploitation reported

CVE-2020-3297

No exploitation reported by the sources we read.

Published2020-07-02
WeaknessCWE-287

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC

2020-07-0205:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2020-3297?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-3297?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Cisco sf200-24 firmwareversion to verify

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

Cisco sf200-24fp firmwareversion to verify

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

Cisco sf200-24p firmwareversion to verify

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

115 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Advisories and patches

tools.cisco.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

CISA-ADPSSVC decisionnone2024-11-15
OpenCVESSVC decisionnone—
NVDCVSS 3.19.8read 2026-10-23
CNACVSS 3.08.1read 2026-10-23
NVDCVSS 2.010read 2026-10-23
CNAweakness (CWE)CWE-287read 2026-10-23
NVDweakness (CWE)CWE-287read 2026-10-23
FIRST EPSSEPSS score3.0 %2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2020-07-02
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2020-3297?

Is CVE-2020-3297 actively exploited?

Active exploitation of CVE-2020-3297 has not been confirmed. Its EPSS score was 3.0% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-3297?

CVE-2020-3297 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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