CVE-2020-35471
CVSS v3
7.5
HIGH
EPSS Score
2.4 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
Envoy before 1.16.1 mishandles dropped and truncated datagrams, as demonstrated by a segmentation fault for a UDP packet size larger than 1500.
Technical details
- Published
- 2020-12-15
Frequently asked questions
What is CVE-2020-35471?
Envoy before 1.16.1 mishandles dropped and truncated datagrams, as demonstrated by a segmentation fault for a UDP packet size larger than 1500.
Is CVE-2020-35471 actively exploited?
Active exploitation of CVE-2020-35471 has not been confirmed. Its EPSS score was 2.4% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2020-35471?
CVE-2020-35471 has a CVSS v3 base score of 7.5 (HIGH severity).
Is CVE-2020-35471 affecting your environment?
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