Our Malware Lab analysed CVE-2025-56383a vulnerability identified in the well-known open-source editor Notepad++ and ranked with a score of CVSS (Common Vulnerability Scoring System) of 8.4. An exploit PoC (Proof of Concept) is already available to the public, while CSIRT Italy issued a bulletin on the subject.
Our independent evaluation shows that, in contexts where permits and security configurations are correctly set up, the reported behaviour does not represent a concrete risk. The alarm generated by this CVE therefore appears to be related more to a inadequate system configuration than to an actual vulnerability of the software involved.
However, CVE-2025-56383 is still under review by the National Vulnerability Database and the final outcome will be announced in the coming weeks.
Since it is not uncommon for a CVE to be attributed even in the absence of an actual vulnerability, this study aims to emphasise the importance for organisations to have in-house expertise to carefully assess the nature of reports and their actual impact on security.
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