Description
FileZilla 3.40.0 contains a denial of service vulnerability in the local search functionality that allows local attackers to crash the application by supplying a malformed path string. Attackers can trigger the crash by entering a crafted path containing 384 'A' characters followed by 'BBBB' and 'CCCC' sequences in the search directory field and initiating a local search operation.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Filezilla-Project | FileZilla | 3.40.0 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | filezilla | No fix yet | — |
| Ubuntu 26.04 LTS | filezilla | No fix yet | — |
| Ubuntu 25.10 | filezilla | No fix yet | — |
| Ubuntu 24.04 LTS | filezilla | No fix yet | — |
| Ubuntu 22.04 LTS | filezilla | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | filezilla | No fix yet | — |
| Ubuntu 18.04 LTS | filezilla | No fix yet | — |
| Ubuntu 16.04 LTS | filezilla | No fix yet | — |
References
- ExploitDB-46484 exploit
- Official Product Homepage product
- VulnCheck Advisory: FileZilla 3.40.0 Denial of Service via Local Search third-party-advisory