CVE-2021-41036
CRITICALCVSS 9.8/10EPSS 1.17%
Last modified
CVE-2021-41036 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. In versions prior to 1.1 of the Eclipse Paho MQTT C Client, the client does not check rem_len size in readpacket.. EPSS estimates a 1.17% chance of exploitation in the next 30 days.
Description
In versions prior to 1.1 of the Eclipse Paho MQTT C Client, the client does not check rem_len size in readpacket.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Eclipse | Paho Mqtt C\/C\+\+ Client | < 1.1.0 |
References
- https://github.com/eclipse/paho.mqtt.embedded-c/issues/96Issue Tracking, Patch, Third Party Advisory
- https://github.com/eclipse/paho.mqtt.embedded-c/issues/96Issue Tracking, Patch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-41036?
In versions prior to 1.1 of the Eclipse Paho MQTT C Client, the client does not check rem_len size in readpacket.
How severe is CVE-2021-41036?
CVE-2021-41036 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.17% probability of exploitation in the next 30 days.
How do I fix CVE-2021-41036?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2021
- CVE-2021-41030An authentication bypass by capture-replay vulnerability [CW…9.1
- CVE-2021-41031A relative path traversal vulnerability [CWE-23] in FortiCli…7.8
- CVE-2021-41032An improper access control vulnerability [CWE-284] in FortiO…5.4
- CVE-2021-41033In all released versions of Eclipse Equinox, at least until …8.1
- CVE-2021-41034The build of some language stacks of Eclipse Che version 6 i…8.1
- CVE-2021-41035In Eclipse Openj9 before version 0.29.0, the JVM does not th…9.8
- CVE-2021-41037In Eclipse p2, installable units are able to alter the Eclip…8
- CVE-2021-41038In versions of the @theia/plugin-ext component of Eclipse Th…6.1
- CVE-2021-41039In versions 1.6 to 2.0.11 of Eclipse Mosquitto, an MQTT v5 c…7.5
- CVE-2021-4104JMSAppender in Log4j 1.2 is vulnerable to deserialization of…7.5
- CVE-2021-41040In Eclipse Wakaama, ever since its inception until 2021-01-1…7.5
- CVE-2021-41041In Eclipse Openj9 before version 0.32.0, Java 8 & 11 fail to…5.3
Are you affected by CVE-2021-41036?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST