Description
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 management interface of an affected device. This vulnerability is due to insufficient expiration of session credentials. An attacker could exploit this vulnerability by conducting a man-in-the-middle attack against an affected device to intercept valid session credentials and then replaying the intercepted credentials toward the same device at a later time. A successful exploit could allow the attacker to access the web-based management interface with administrator privileges.
Published: 2021-11-04
Score: 8.1 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2021-21389 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 management interface of an affected device. This vulnerability is due to insufficient expiration of session credentials. An attacker could exploit this vulnerability by conducting a man-in-the-middle attack against an affected device to intercept valid session credentials and then replaying the intercepted credentials toward the same device at a later time. A successful exploit could allow the attacker to access the web-based management interface with administrator privileges.
History

Sat, 12 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00506}

epss

{'score': 0.00249}


Thu, 07 Nov 2024 22:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Subscriptions

Cisco Cbs250-16p-2g Cbs250-16p-2g Firmware Cbs250-16t-2g Cbs250-16t-2g Firmware Cbs250-24fp-4g Cbs250-24fp-4g Firmware Cbs250-24fp-4x Cbs250-24fp-4x Firmware Cbs250-24p-4g Cbs250-24p-4g Firmware Cbs250-24p-4x Cbs250-24p-4x Firmware Cbs250-24pp-4g Cbs250-24pp-4g Firmware Cbs250-24t-4g Cbs250-24t-4g Firmware Cbs250-24t-4x Cbs250-24t-4x Firmware Cbs250-48p-4g Cbs250-48p-4g Firmware Cbs250-48p-4x Cbs250-48p-4x Firmware Cbs250-48pp-4g Cbs250-48pp-4g Firmware Cbs250-48t-4g Cbs250-48t-4g Firmware Cbs250-48t-4x Cbs250-48t-4x Firmware Cbs250-8fp-e-2g Cbs250-8fp-e-2g Firmware Cbs250-8p-e-2g Cbs250-8p-e-2g Firmware Cbs250-8pp-d Cbs250-8pp-d Firmware Cbs250-8pp-e-2g Cbs250-8pp-e-2g Firmware Cbs250-8t-d Cbs250-8t-d Firmware Cbs250-8t-e-2g Cbs250-8t-e-2g Firmware Cbs350-12np-4x Cbs350-12np-4x Firmware Cbs350-12xs Cbs350-12xs Firmware Cbs350-12xt Cbs350-12xt Firmware Cbs350-16fp-2g Cbs350-16fp-2g Firmware Cbs350-16p-2g Cbs350-16p-2g Firmware Cbs350-16p-e-2g Cbs350-16p-e-2g Firmware Cbs350-16t-2g Cbs350-16t-2g Firmware Cbs350-16t-e-2g Cbs350-16t-e-2g Firmware Cbs350-16xts Cbs350-16xts Firmware Cbs350-24fp-4g Cbs350-24fp-4g Firmware Cbs350-24fp-4x Cbs350-24fp-4x Firmware Cbs350-24mgp-4x Cbs350-24mgp-4x Firmware Cbs350-24ngp-4x Cbs350-24ngp-4x Firmware Cbs350-24p-4g Cbs350-24p-4g Firmware Cbs350-24p-4x Cbs350-24p-4x Firmware Cbs350-24s-4g Cbs350-24s-4g Firmware Cbs350-24t-4g Cbs350-24t-4g Firmware Cbs350-24t-4x Cbs350-24t-4x Firmware Cbs350-24xs Cbs350-24xs Firmware Cbs350-24xt Cbs350-24xt Firmware Cbs350-24xts Cbs350-24xts Firmware Cbs350-48fp-4g Cbs350-48fp-4g Firmware Cbs350-48fp-4x Cbs350-48fp-4x Firmware Cbs350-48ngp-4x Cbs350-48ngp-4x Firmware Cbs350-48p-4g Cbs350-48p-4g Firmware Cbs350-48p-4x Cbs350-48p-4x Firmware Cbs350-48t-4g Cbs350-48t-4g Firmware Cbs350-48t-4x Cbs350-48t-4x Firmware Cbs350-48xt-4x Cbs350-48xt-4x Firmware Cbs350-8fp-2g Cbs350-8fp-2g Firmware Cbs350-8fp-e-2g Cbs350-8fp-e-2g Firmware Cbs350-8mgp-2x Cbs350-8mgp-2x Firmware Cbs350-8mp-2x Cbs350-8mp-2x 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Firmware Sg300-28p Sg300-28p Firmware Sg300-28pp Sg300-28pp Firmware Sg300-28sfp Sg300-28sfp Firmware Sg300-52 Sg300-52 Firmware Sg300-52mp Sg300-52mp Firmware Sg300-52p Sg300-52p Firmware Sg350x-12pmv Sg350x-12pmv Firmware Sg350x-24 Sg350x-24 Firmware Sg350x-24mp Sg350x-24mp Firmware Sg350x-24p Sg350x-24p Firmware Sg350x-24pd Sg350x-24pd Firmware Sg350x-24pv Sg350x-24pv Firmware Sg350x-48 Sg350x-48 Firmware Sg350x-48mp Sg350x-48mp Firmware Sg350x-48p Sg350x-48p Firmware Sg350x-48pv Sg350x-48pv Firmware Sg350x-8pmd Sg350x-8pmd Firmware Sg350xg-24f Sg350xg-24f Firmware Sg350xg-24t Sg350xg-24t Firmware Sg350xg-2f10 Sg350xg-2f10 Firmware Sg350xg-48t Sg350xg-48t Firmware Sg500-28 Sg500-28 Firmware Sg500-28mpp Sg500-28mpp Firmware Sg500-28p Sg500-28p Firmware Sg500-52 Sg500-52 Firmware Sg500-52mp Sg500-52mp Firmware Sg500-52p Sg500-52p Firmware Sg500x-24 Sg500x-24 Firmware Sg500x-24mpp Sg500x-24mpp Firmware Sg500x-24p Sg500x-24p Firmware Sg500x-48 Sg500x-48 Firmware Sg500x-48mp Sg500x-48mp Firmware Sg500x-48p Sg500x-48p Firmware Sg500xg-8f8t Sg500xg-8f8t Firmware Sg550x-24 Sg550x-24 Firmware Sg550x-24mp Sg550x-24mp Firmware Sg550x-24mpp Sg550x-24mpp Firmware Sg550x-24p Sg550x-24p Firmware Sg550x-48 Sg550x-48 Firmware Sg550x-48mp Sg550x-48mp Firmware Sg550x-48p Sg550x-48p Firmware Sg550xg-24f Sg550xg-24f Firmware Sg550xg-24t Sg550xg-24t Firmware Sg550xg-48t Sg550xg-48t Firmware Sg550xg-8f8t Sg550xg-8f8t Firmware Sx350x-08 Sx350x-08 Firmware Sx350x-12 Sx350x-12 Firmware Sx350x-24 Sx350x-24 Firmware Sx350x-24f Sx350x-24f Firmware Sx350x-52 Sx350x-52 Firmware Sx550x-12f Sx550x-12f Firmware Sx550x-16ft Sx550x-16ft Firmware Sx550x-24 Sx550x-24 Firmware Sx550x-24f Sx550x-24f Firmware Sx550x-24ft Sx550x-24ft Firmware Sx550x-52 Sx550x-52 Firmware
cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published:

Updated: 2024-11-07T21:43:18.199Z

Reserved: 2021-06-15T00:00:00.000Z

Link: CVE-2021-34739

cve-icon Vulnrichment

Updated: 2024-08-04T00:19:48.160Z

cve-icon NVD

Status : Modified

Published: 2021-11-04T16:15:08.577

Modified: 2024-11-21T06:11:05.400

Link: CVE-2021-34739

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses