What is CVE-2021-34739?

CVE-2021-34739 is a high-severity vulnerability in Cisco Small Business Smart And Managed Switches, classified under Insufficient Session Expiration. CVSS score: 8.1/10. Published 2021-11-04.

How severe is CVE-2021-34739?

High severity. CVSS v3 base score is 8.1 out of 10.

Vulnerability in Cisco Small Business Smart And Managed Switches

CVE-2021-34739

A vulnerability in the web-based management interface of multiple Cisco Small Business Series Switches could allow an unauthenticated, remote attacker to replay valid user session credentials and gain unauthorized access to the web-based m…

EPSS: 0.005 (66.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Cisco Small Business Smart And Managed Switches — versions n/a

Weakness classification (CWE)

CWE-613 — Insufficient Session Expiration

References

20211103 Cisco Small Business Series Switches Session Credentials Replay Vulnerability (vendor-advisory, x_refsource_CISCO)

Frequently asked questions

What is CVE-2021-34739?: CVE-2021-34739 is a high-severity vulnerability in Cisco Small Business Smart And Managed Switches, classified under Insufficient Session Expiration. CVSS score: 8.1/10. Published 2021-11-04.
How severe is CVE-2021-34739?: High severity. CVSS v3 base score is 8.1 out of 10.