In GnuPG before 2.5.5, if a user chooses to import a certificate with certain crafted subkey data that lacks a valid backsig or that has incorrect usage flags, the user loses the ability to verify signatures made from certain other signing keys, aka a "verification DoS."
| Version | Score | Severity | Vector String |
|---|---|---|---|
| 3.1 | 2.7 | Low | CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:N/I:N/A:L |
| Product | Vendor | Version |
|---|---|---|
| GnuPG | GnuPG | 3.2(7k) |