What’s Vulnerable › Vulnerabilities

CVE-2022-24976

• Severity: critical (CVSS 9.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-02-14 · updated 2026-06-17
• Weakness: CWE-287

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.

Affected products

• Atheme: from 7.2.0 before 7.2.12 — fixed in 7.2.12

How to fix

Upgrade to a fixed version: Atheme 7.2.12. Check the vendor advisory for mitigations.

References

• https://github.com/atheme/atheme/commit/4e664c75d0b280a052eb8b5e81aa41944e593c52
• https://github.com/atheme/atheme/compare/v7.2.11...v7.2.12
• https://www.openwall.com/lists/oss-security/2022/01/30/4
• https://github.com/atheme/atheme/commit/4e664c75d0b280a052eb8b5e81aa41944e593c52
• https://github.com/atheme/atheme/compare/v7.2.11...v7.2.12
• https://www.openwall.com/lists/oss-security/2022/01/30/4

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