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Fencer Vulns
high 7.5

CVE-2021-41569 json

SAS/Intrnet 9.4 build 1520 and earlier allows Local File Inclusion.

published 2021-11-19 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-28585

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
8.0%
EPSS 8.0% chance of exploitation in 30 days, percentile 94%
public exploits
0
none known, plus a Nuclei check

Summary

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.

Patch / fix

  • sas sas/intrnet 9.4

Exploit prediction

7.97% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • Nuclei template SAS/Internet 9.4 1520 - Local File Inclusion nuclei detection template
  • mindpointgroup.com https://www.mindpointgroup.com/blog/high-risk-vulnerability-discovery-localfileinclusion-sas referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-829 Inclusion of Functionality from Untrusted Control Sphere

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.