CVE-2021-33175 json
EMQ X Broker versions prior to 4.2.8 are vulnerable to a denial of service attack as a result of excessive memory consumption due to the ha…
published 2021-06-08 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-19890
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.1%
- EPSS 1.1% chance of exploitation in 30 days, percentile 65%
- public exploits
- 0
- none known
Summary
EMQ X Broker versions prior to 4.2.8 are vulnerable to a denial of service attack as a result of excessive memory consumption due to the handling of untrusted inputs. These inputs cause the message broker to consume large amounts of memory, resulting in the application being terminated by the operating system.
Patch / fix
- emqx emq_x_broker 4.2.8
Exploit prediction
1.10% chance of exploitation in the next 30 days, higher than 65% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
Affected products
- EMQ Technologies EMQ X Broker
Classification
References
-
synopsys.com
/blogs/software-security/cyrc-advisory-rabbitmq-emqx-vernemq
patch, third-party-advisory
Sources
- CVE List CVE-2021-33175
- NVD CVE-2021-33175
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