CVE-2021-1491

MEDIUM
Published Nov 15, 2024 Modified Aug 4, 2025 CWE-59

Description

A vulnerability in the web-based management interface of Cisco SD-WAN vManage Software could allow an authenticated, remote attacker to read arbitrary files on the underlying file system of the device. This vulnerability is due to insufficient file scope limiting. An attacker could exploit this vulnerability by creating a specific file reference on the file system and then accessing it through the web-based management interface. A successful exploit could allow the attacker to read arbitrary files from the file system of the underlying operating 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

6.5
MEDIUM
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Weakness Type (CWE)

CWE-59 CWE-59

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
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-2021-1491? +
A vulnerability in the web-based management interface of Cisco SD-WAN vManage Software could allow an authenticated, remote attacker to read arbitrary files on the underlying file system of the device. This vulnerability is due to insufficient file scope limiting. An attacker could exploit this vulnerability by creating a specific file reference on the file system and then accessing it through the web-based management interface. A successful exploit could allow the attacker to read arbitrary files from the file system of the underlying operating 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 6.5 (MEDIUM).
How severe is CVE-2021-1491? +
CVE-2021-1491 has a CVSS v3.1 score of 6.5 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-2021-1491? +
CVE-2021-1491 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-2021-1491? +
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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