What’s Vulnerable › Vulnerabilities

CVE-2021-41569

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 8.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-11-19 · updated 2026-06-17
• Weakness: CWE-829

Description

SAS/Intrnet 9.4 build 1520 and earlier allows Local File Inclusion. The samples library (included by default) in the appstart.sas file, allows end-users of the application to access the sample.webcsf1.sas program, which contains user-controlled macro variables that are passed to the DS2CSF macro. Users can escape the context of the configured user-controllable variable and append additional functions native to the macro but not included as variables within the library. This includes a function that retrieves files from the host OS.

Affected products

• Sas/Intrnet: before 9.4; 9.4, 9.4-build1520 — fixed in 9.4

How to fix

Upgrade to a fixed version: Sas/Intrnet 9.4. Check the vendor advisory for mitigations.

References

• https://support.sas.com/kb/68/641.html
• https://www.mindpointgroup.com/blog/high-risk-vulnerability-discovery-localfileinclusion-sas
• https://support.sas.com/kb/68/641.html
• https://www.mindpointgroup.com/blog/high-risk-vulnerability-discovery-localfileinclusion-sas

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