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CVE-2022-24976

30
FAUCET Score

CVE-2022-24976 is an authentication bypass vulnerability affecting Atheme IRC Services versions prior to 7.2.12, specifically when integrated with InspIRCd. This critical vulnerability, rated 9.1 CVSS, allows an unauthenticated attacker to bypass login by manipulating the IRC handshake during a challenge-response sequence, potentially leading to full compromise of affected services. While no public exploit code or active exploitation has been confirmed, the vulnerability has garnered significant community discussion, indicating awareness and potential for future exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
>= 7.2.0, < 7.2.12CPE matchmatch criteria
cpe:2.3:a:atheme:atheme:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.1CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.82%
Probability of exploitation in next 30 days
EPSS Percentile
76.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0182 is in the 65th percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / atheme/atheme/commit/4e664c75d0b280a052eb8b5e81aa41944e593c52
PatchThird Party Advisory
github.com / atheme/atheme/compare/v7.2.11...v7.2.12
PatchThird Party Advisory
openwall.com / lists/oss-security/2022/01/30/4
ExploitMailing ListThird Party Advisory