CVE-2022-24976
CVE-2022-24976 is a critical-severity vulnerability in Atheme with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.
Key facts
- Severity: Critical (CVSS 3.x base score 9.1)
- CVSS v2: 5.8
- EPSS exploit prediction: 2% (76th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-287
- Affected product: Atheme
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2022-24976?
- 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.
- How severe is CVE-2022-24976?
- CVE-2022-24976 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
- Is CVE-2022-24976 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2022-24976?
- CVE-2022-24976 affects Atheme. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2022-24976?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2022-24976 published?
- CVE-2022-24976 was published on 2022-02-14 and last updated on 2026-06-17.
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
Affected products (1)
- cpe:2.3:a:atheme:atheme:*:*:*:*:*:*:*:*
More vulnerabilities in Atheme
- CVE-2024-27508 — High (CVSS 7.5): Atheme 7.2.12 contains a memory leak vulnerability in /atheme/src/crypto-benchmark/main.c.
- CVE-2017-6384 — High (CVSS 7.5): Memory leak in the login_user function in saslserv/main.c in saslserv/main.so in Atheme 7.2.7 allows a remote…
- CVE-2016-4478 — High (CVSS 7.5): Buffer overflow in the xmlrpc_char_encode function in modules/transport/xmlrpc/xmlrpclib.c in Atheme before 7.2.7…
- CVE-2014-9773 — High (CVSS 7.5): modules/chanserv/flags.c in Atheme before 7.2.7 allows remote attackers to modify the Anope FLAGS behavior by…
- CVE-2012-1576 — Medium (CVSS 6.0): The myuser_delete function in libathemecore/account.c in Atheme 5.x before 5.2.7, 6.x before 6.0.10, and 7.x before…
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