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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.39%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 2.39% probability · 84th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- envoyproxy/envoy
- Source
- cve@mitre.org
EPSS 2.4% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://github.com/envoyproxy/envoy/compare/v1.16.0...v1.16.1Patch, Third Party Advisory
- https://github.com/envoyproxy/envoy/issues/14113Exploit, Third Party Advisory
- https://github.com/envoyproxy/envoy/pull/14122Patch, Third Party Advisory
- https://github.com/envoyproxy/envoy/compare/v1.16.0...v1.16.1Patch, Third Party Advisory
- https://github.com/envoyproxy/envoy/issues/14113Exploit, Third Party Advisory
- https://github.com/envoyproxy/envoy/pull/14122Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.