CVE-2025-43991

SupportAssist for Home PCs versions 4.8.2 and prior and SupportAssist for Business PCs versions 4.5.3 and prior, contain an UNIX Symbolic Link (Symlink) following vulnerability. A low privileged attacker with local access to the system could potentially exploit this vulnerability to delete arbitrary files only in that affected system.

Weakness

The product, when opening a file or directory, does not sufficiently account for when the file is a symbolic link that resolves to a target outside of the intended control sphere. This could allow an attacker to cause the product to operate on unauthorized files.

Potential Mitigations

• Follow the principle of least privilege when assigning access rights to entities in a software system.
• Denying access to a file can prevent an attacker from replacing that file with a link to a sensitive file. Ensure good compartmentalization in the system to provide protected areas that can be trusted.

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/27.html

References

• https://www.dell.com/support/kbdoc/en-us/000378367/dsa-2025-362-security-update-for-dell-supportassist-for-home-pcs-and-dell-supportassist-for-business-pcs-vulnerabilities