CVE-2021-33586
MEDIUM
4.3
CVSS Score
Published: May 27, 2021 at 05:00 AM UTC
Updated: June 17, 2026 at 03:54 AM UTC
1 product affected across 1 vendorInspircd
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Severity
MEDIUM4.3
Exploit prediction
EPSS 0.9%
Description
InspIRCd 3.8.0 through 3.9.x before 3.10.0 allows any user (able to connect to the server) to access recently deallocated memory, aka the "malformed PONG" issue.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
3.8.0 ≤ v < 3.10.0
Affected range stops below 3.10.0, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (3)
x_refsource_MISCPatchVendor Advisory
Source: [email protected]
https://docs.inspircd.org/security/2021-01/x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/inspircd/inspircd/commit/4350a11c663b0d75f8119743bffb7736d87abd4dVendor Advisoryx_refsource_GENTOOThird Party Advisory
Source: [email protected]
https://security.gentoo.org/glsa/202107-22CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- LOW
- Integrity
- NONE
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-732
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