Vulnerability Details : CVE-2021-28166
In Eclipse Mosquitto version 2.0.0 to 2.0.9, if an authenticated client that had connected with MQTT v5 sent a crafted CONNACK message to the broker, a NULL pointer dereference would occur.
Vulnerability category: Memory Corruption
Products affected by CVE-2021-28166
- cpe:2.3:a:eclipse:mosquitto:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-28166
0.05%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 19 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-28166
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
4.0
|
MEDIUM | AV:N/AC:L/Au:S/C:N/I:N/A:P |
8.0
|
2.9
|
NIST | |
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
2.8
|
3.6
|
Eclipse Foundation | |
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
2.8
|
3.6
|
NIST |
CWE ids for CVE-2021-28166
-
The product dereferences a pointer that it expects to be valid but is NULL.Assigned by:
- emo@eclipse.org (Secondary)
- nvd@nist.gov (Primary)
References for CVE-2021-28166
-
https://bugs.eclipse.org/bugs/show_bug.cgi?id=572608
572608 – (CVE-2021-28166) Mosquitto: CVE request - NULL pointer dereference on crafted CONNACKIssue Tracking;Patch;Vendor Advisory
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