Back to Database
Status published
Medium
CVE-2021-45937
wolfSSL wolfMQTT 1.9 has a heap-based buffer overflow in MqttClient_DecodePacket...
Vulnerability Description
wolfSSL wolfMQTT 1.9 has a heap-based buffer overflow in MqttClient_DecodePacket (called from MqttClient_WaitType and MqttClient_Connect).
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
THREAT MONITOR
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2021-45937
Credits & Attribution
No credits recorded in the NVD database.
References
More from wolfssl
View All →CVE-2022-42961
An issue was discovered in wolfSSL before 5.5.0. A fault...
Unknown
0
CVE-2022-42905
In wolfSSL before 5.5.2, if callback functions are enabled (via...
Unknown
0
CVE-2022-39173
In wolfSSL before 5.5.1, malicious clients can cause a buffer...
Unknown
0
CVE-2022-38153
An issue was discovered in wolfSSL before 5.5.0 (when --enable-session-ticket...
Medium
5.9
CVE-2022-38152
An issue was discovered in wolfSSL before 5.5.0. When a...
High
7.5
Affected Vendor
wolfssl
View all reports →Affected Software
wolfmqtt
Vulnerable Versions:
1.9
Timeline
Official Publish:
December 31st, 2021
Last Modified:
August 4th, 2024
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.