Description
Format string vulnerability in telnetd-ssl 0.17 and earlier allows remote attackers to execute arbitrary code.
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 | netkit-telnet-ssl | 0.17.24+0.1-6 | — |
| Debian 13 | netkit-telnet-ssl | 0.17.24+0.1-6 | — |
| Debian 12 | netkit-telnet-ssl | 0.17.24+0.1-6 | — |
| Debian 3.0 | netkit-telnet-ssl | 0.17.17+0.1-2woody3 | DSA-616-1 |
Advisories 1
- DSA-616-1 telnetd-ssl - format string Debian Security (DSA / DLA) · Mar 9, 2026
References
- VU#995038 third-party-advisory
- DSA-616 vendor-advisory
- 13663 third-party-advisory
- netkit-telnetssl-format-string(18654) vdb-entry