Advisory Details

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Anritsu VectorStar. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the parsing of CHX files. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of the current process.

05/29/25 – ZDI submitted the report to the vendor
09/11/25 – ZDI asked for updates
09/12/25 – the vendor acknowledged the receipt of the report
10/10/25 – ZDI asked for the fix
12/10/25 – ZDI notified the vendor of the intention to publish the case as a 0-day advisory on 12/30/25

-- Mitigation: Given the nature of the vulnerability, the only salient mitigation strategy is to restrict interaction with the product

• 2025-05-29 - Vulnerability reported to vendor
• 2025-12-30 - Coordinated public release of advisory
• 2025-12-30 - Advisory Updated