CVE-2021-1234

MEDIUM
Published Nov 18, 2024 Modified Aug 4, 2025 CWE-497

Description

A vulnerability in the cluster management interface of Cisco SD-WAN vManage Software could allow an unauthenticated, remote attacker to view sensitive information on an affected system. To be affected by this vulnerability, the vManage software must be in cluster mode. This vulnerability is due to the absence of authentication for sensitive information in the cluster management interface. An attacker could exploit this vulnerability by sending a crafted request to the cluster management interface of an affected system. A successful exploit could allow the attacker to view sensitive information on the affected system.Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

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CVSS v3.1 Score

5.3
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Weakness Type (CWE)

CWE-497 CWE-497

Affected Products

Vendor Product
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager
cisco catalyst_sd-wan_manager

References

Frequently Asked Questions

What is CVE-2021-1234? +
A vulnerability in the cluster management interface of Cisco SD-WAN vManage Software could allow an unauthenticated, remote attacker to view sensitive information on an affected system. To be affected by this vulnerability, the vManage software must be in cluster mode. This vulnerability is due to the absence of authentication for sensitive information in the cluster management interface. An attacker could exploit this vulnerability by sending a crafted request to the cluster management interface of an affected system. A successful exploit could allow the attacker to view sensitive information on the affected system.Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. It has a CVSS v3.1 base score of 5.3 (MEDIUM).
How severe is CVE-2021-1234? +
CVE-2021-1234 has a CVSS v3.1 score of 5.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.
What products are affected by CVE-2021-1234? +
CVE-2021-1234 affects products from cisco, specifically: catalyst_sd-wan_manager. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2021-1234? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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