VulnerabilityModified
CVE-2021-45938
wolfSSL wolfMQTT 1.9 has a heap-based buffer overflow in MqttClient_DecodePacket (called from MqttClient_WaitType and MqttClient_Unsubscribe).
MEDIUM 5.5EPSS 0.89%
Does this matter?
Lower severity and a low EPSS score (0.89%). Track it; it rarely justifies an emergency change on its own.
Description
wolfSSL wolfMQTT 1.9 has a heap-based buffer overflow in MqttClient_DecodePacket (called from MqttClient_WaitType and MqttClient_Unsubscribe).
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- EPSS
- 0.89% probability · 57th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- wolfssl/wolfmqtt
- Source
- cve@mitre.org
References
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=39056Exploit, Issue Tracking, Third Party Advisory
- https://github.com/google/oss-fuzz-vulns/blob/main/vulns/wolfmqtt/OSV-2021-1353.yamlExploit, Third Party Advisory
- https://github.com/wolfSSL/wolfMQTT/commit/84d4b53122e0fa0280c7872350b89d5777dabbb2Patch, Third Party Advisory
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=39056Exploit, Issue Tracking, Third Party Advisory
- https://github.com/google/oss-fuzz-vulns/blob/main/vulns/wolfmqtt/OSV-2021-1353.yamlExploit, Third Party Advisory
- https://github.com/wolfSSL/wolfMQTT/commit/84d4b53122e0fa0280c7872350b89d5777dabbb2Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.