CVE catalog
CVE-2016-7406
dropbear: CVE-2016-7406
- Severity
- Medium
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 10.22% · Oct 22, 2026
Format string vulnerability in Dropbear SSH before 2016.74 allows remote attackers to execute arbitrary code via format string specifiers in the (1) username or (2) host argument.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | dropbear | sid | 2026.94-1 | fixed |
| Debian | dropbear | forky | 2026.94-1 | fixed |
| Debian | dropbear | trixie | 2025.89-1~deb13u1 | fixed |
| Debian | dropbear | trixie-security | 2025.89-1~deb13u1 | fixed |
| Debian | dropbear | bookworm | 2022.83-1+deb12u3 | fixed |
| Ubuntu | dropbear | 16.04 | 2014.65-1ubuntu2 | vulnerable |
| Ubuntu | dropbear | 16.04 | 2015.68-1 | vulnerable |
| Ubuntu | dropbear | 16.04 | 2015.70-1 | vulnerable |
| Ubuntu | dropbear | 16.04 | 2015.71-1 | vulnerable |
| Ubuntu | dropbear | 16.04 | 2016.72-1 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | dropbear | source | sid | 2016.74-1 | not yet assigned | Not reported | Not reported |
| Debian | dropbear | source | forky | 2016.74-1 | not yet assigned | Not reported | Not reported |
| Debian | dropbear | source | trixie | 2016.74-1 | not yet assigned | Not reported | Not reported |
| Debian | dropbear | source | bookworm | 2016.74-1 | not yet assigned | Not reported | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [dropbear]Fixed
Details (2)
2022.83-1+deb12u3· all · bookwormFixed · Fixed:
2016.74-1dsa · dropbear · debian · bookworm; dsa · dropbear · debian · 12
2022.83-1+deb12u3· all · bookwormFixed · Fixed:
2016.74-1dsa · dropbear · debian · bookworm; dsa · dropbear · debian · 12
- [dropbear-bin]Fixed
Source package: [dropbear]
Details (2)
2022.83-1+deb12u3· amd64 · bookwormFixed · Fixed:
2016.74-1dsa · dropbear · debian · bookworm; dsa · dropbear · debian · 12
2022.83-1+deb12u3· arm64 · bookwormFixed · Fixed:
2016.74-1dsa · dropbear · debian · bookworm; dsa · dropbear · debian · 12
- [dropbear-initramfs]Fixed
Source package: [dropbear]
Details (2)
2022.83-1+deb12u3· all · bookwormFixed · Fixed:
2016.74-1dsa · dropbear · debian · bookworm; dsa · dropbear · debian · 12
2022.83-1+deb12u3· all · bookwormFixed · Fixed:
2016.74-1dsa · dropbear · debian · bookworm; dsa · dropbear · debian · 12
- [dropbear-run]Fixed
Source package: [dropbear]
Details (2)
2022.83-1+deb12u3· all · bookwormFixed · Fixed:
2016.74-1dsa · dropbear · debian · bookworm; dsa · dropbear · debian · 12
2022.83-1+deb12u3· all · bookwormFixed · Fixed:
2016.74-1dsa · dropbear · debian · bookworm; dsa · dropbear · debian · 12
[Debian 13 (Trixie)]
- [dropbear]Fixed
Details (4)
2025.89-1~deb13u1· all · trixieFixed · Fixed:
2016.74-1dsa · dropbear · debian · 13
2025.89-1~deb13u1· all · trixieFixed · Fixed:
2016.74-1dsa · dropbear · debian · 13
2025.89-1~deb13u1· all · trixie-securityFixed · Fixed:
2016.74-1dsa · dropbear · debian · 13
2025.89-1~deb13u1· all · trixie-securityFixed · Fixed:
2016.74-1dsa · dropbear · debian · 13
- [dropbear-bin]Fixed
Source package: [dropbear]
Details (4)
2025.89-1~deb13u1· amd64 · trixieFixed · Fixed:
2016.74-1dsa · dropbear · debian · 13
2025.89-1~deb13u1· arm64 · trixieFixed · Fixed:
2016.74-1dsa · dropbear · debian · 13
2025.89-1~deb13u1· amd64 · trixie-securityFixed · Fixed:
2016.74-1dsa · dropbear · debian · 13
2025.89-1~deb13u1· arm64 · trixie-securityFixed · Fixed:
2016.74-1dsa · dropbear · debian · 13
- [dropbear-initramfs]Fixed
Source package: [dropbear]
Details (4)
2025.89-1~deb13u1· all · trixieFixed · Fixed:
2016.74-1dsa · dropbear · debian · 13
2025.89-1~deb13u1· all · trixieFixed · Fixed:
2016.74-1dsa · dropbear · debian · 13
2025.89-1~deb13u1· all · trixie-securityFixed · Fixed:
2016.74-1dsa · dropbear · debian · 13
2025.89-1~deb13u1· all · trixie-securityFixed · Fixed:
2016.74-1dsa · dropbear · debian · 13
Observed: