Description
Atheme IRC Services before 7.2.12, when used in conjunction with InspIRCd, allows authentication bypass by ending an IRC handshake at a certain point during a challenge-response login sequence.
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 | atheme-services | 7.2.12-1 | — |
| Debian 13 | atheme-services | 7.2.12-1 | — |
| Debian 12 | atheme-services | 7.2.12-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | atheme-services | No fix yet | — |
| Ubuntu 26.04 LTS | atheme-services | No fix yet | — |
| Ubuntu 25.10 | atheme-services | No fix yet | — |
| Ubuntu 24.04 LTS | atheme-services | No fix yet | — |
| Ubuntu 22.04 LTS | atheme-services | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | atheme-services | No fix yet | — |
| Ubuntu 18.04 LTS | atheme-services | No fix yet | — |
| Ubuntu 16.04 LTS | atheme-services | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SUSE Package Hub 15 SP4 | atheme | 7.2.12-bp154.2.3.1 | openSUSE-SU-2022:10019-1 |
| SUSE Package Hub 15 SP3 | atheme | 7.2.12-bp153.2.3.1 | openSUSE-SU-2022:10018-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | atheme | 7.2.12-2.1 | openSUSE-SU-2024:11848-1 |
| openSUSE Leap 15.4 | atheme | 7.2.12-bp154.2.3.1 | openSUSE-SU-2022:10019-1 |
| openSUSE Leap 15.3 | atheme | 7.2.12-bp153.2.3.1 | openSUSE-SU-2022:10018-1 |
Advisories 3
- openSUSE-SU-2022:10019-1 Security update for atheme SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11848-1 atheme-7.2.12-2.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2022:10018-1 Security update for atheme SUSE / openSUSE Security Updates · Feb 4, 2026