Similar to CVE-2023-28163, this time when choosing 'Save Link As', suggested filenames containing environment variable names would have resolved those in the context of the current user.
*This bug only affects Firefox and Thunderbird on Windows. Other versions of Firefox and Thunderbird are unaffected.* This vulnerability affects Firefox < 112, Firefox ESR < 102.10, and Thunderbird < 102.10.
CVE ID: CVE-2023-29545
CVSS Base Severity: LOW
CVSS Base Score: 0.0
Vendor: Mozilla
Product: Firefox
EPSS Score: 0.11% (probability of being exploited)
EPSS Percentile: 44.97% (scored less or equal to compared to others)
EPSS Date: 2025-02-03 (when was this score calculated)