Risk | High |
Patch available | NO |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2021-34739 |
CWE-ID | CWE-613 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software Subscribe |
Cisco 250 Series Smart Switches Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco 350 Series Managed Switches Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco 350X Series Stackable Managed Switches Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco 550X Series Stackable Managed Switches Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco ESW2 Series Advanced Switches Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Small Business 200 Series Smart Switches Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Small Business 300 Series Managed Switches Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Small Business 500 Series Stackable Managed Switches Hardware solutions / Routers & switches, VoIP, GSM, etc |
Vendor | Cisco Systems, Inc |
Security Bulletin
This security bulletin contains one high risk vulnerability.
EUVDB-ID: #VU57958
Risk: High
CVSSv3.1: 7.4 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:U/RC:C]
CVE-ID: CVE-2021-34739
CWE-ID:
CWE-613 - Insufficient Session Expiration
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to insufficient expiration of session credentials. A remote non-authenticated attacker can obtain or guess session token, gain unauthorized access to session that belongs to another user and access the web-based management interface with administrator privileges.
MitigationCybersecurity Help is currently unaware of any official solution to address this vulnerability.
Vulnerable software versionsCisco 250 Series Smart Switches: All versions
Cisco 350 Series Managed Switches: All versions
Cisco 350X Series Stackable Managed Switches: All versions
Cisco 550X Series Stackable Managed Switches: All versions
Cisco ESW2 Series Advanced Switches: All versions
Cisco Small Business 200 Series Smart Switches: All versions
Cisco Small Business 300 Series Managed Switches: All versions
Cisco Small Business 500 Series Stackable Managed Switches: All versions
External linksQ & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.