CVE-2019-18836
CVSS v3
7.5
HIGH
EPSS Score
1.9 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
Envoy 1.12.0 allows a remote denial of service because of resource loops, as demonstrated by a single idle TCP connection being able to keep a worker thread in an infinite busy loop when continue_on_listener_filters_timeout is used."
Technical details
- Published
- 2019-11-11
Frequently asked questions
What is CVE-2019-18836?
Envoy 1.12.0 allows a remote denial of service because of resource loops, as demonstrated by a single idle TCP connection being able to keep a worker thread in an infinite busy loop when continue_on_listener_filters_timeout is used."
Is CVE-2019-18836 actively exploited?
Active exploitation of CVE-2019-18836 has not been confirmed. Its EPSS score was 1.9% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2019-18836?
CVE-2019-18836 has a CVSS v3 base score of 7.5 (HIGH severity).
Is CVE-2019-18836 affecting your environment?
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