CVE-2020-26074

HIGH
Published Nov 18, 2024 Modified Aug 4, 2025 CWE-250

Description

A vulnerability in system file transfer functions of Cisco SD-WAN vManage Software could allow an authenticated, local attacker to gain escalated privileges on the underlying operating system. The vulnerability is due to improper validation of path input to the system file transfer functions. An attacker could exploit this vulnerability by sending requests that contain specially crafted path variables to the vulnerable system. A successful exploit could allow the attacker to overwrite arbitrary files, allowing the attacker to modify the system in such a way that could allow the attacker to gain escalated privileges.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

7.8
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-250 CWE-250

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

References

Frequently Asked Questions

What is CVE-2020-26074? +
A vulnerability in system file transfer functions of Cisco SD-WAN vManage Software could allow an authenticated, local attacker to gain escalated privileges on the underlying operating system. The vulnerability is due to improper validation of path input to the system file transfer functions. An attacker could exploit this vulnerability by sending requests that contain specially crafted path variables to the vulnerable system. A successful exploit could allow the attacker to overwrite arbitrary files, allowing the attacker to modify the system in such a way that could allow the attacker to gain escalated privileges.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 7.8 (HIGH).
How severe is CVE-2020-26074? +
CVE-2020-26074 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.
What products are affected by CVE-2020-26074? +
CVE-2020-26074 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-2020-26074? +
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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