Description
dbclient in Dropbear SSH before 2025.88 allows command injection via an untrusted hostname argument, because a shell is used.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Dropbear SSH Project | Dropbear SSH | < 2025.88 | 2025.88 |
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.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | dropbear | 2025.88-1 | — |
| Debian 13 | dropbear | 2025.88-1 | — |
| Debian 12 | dropbear | 2022.83-1+deb12u3 | — |
| Debian 11 | dropbear | 2020.81-3+deb11u3 | DLA-4169-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 25.10 | dropbear | No fix yet | — |
| Ubuntu 24.04 LTS | dropbear | No fix yet | — |
| Ubuntu 22.04 LTS | dropbear | No fix yet | — |
| Ubuntu 16.04 LTS | dropbear | No fix yet | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | dropbear | No fix yet | — |
| Ubuntu Pro 18.04 LTS | dropbear | No fix yet | — |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | dropbear | 2025.88-r0 | — |
Advisories 2
- DLA-4169-1 dropbear - security update Debian Security (DSA / DLA) · Mar 9, 2026
- WID-SEC-2025-0966 Dropbear SSH: Schwachstelle ermöglicht Codeausführung BSI CERT-Bund (WID) · May 21, 2025