CVE-2021-28683
7.5
HIGH
CVSS 3.1
EPSS 0.12%
Description
An issue was discovered in Envoy through 1.71.1. There is a remotely exploitable NULL pointer dereference and crash in TLS when an unknown TLS alert code is received.
How to fix CVE-2021-28683
To remediate CVE-2021-28683, upgrade the affected package to a fixed version below.
- Bitnami/envoy—upgrade to 1.16.3 or later
Is CVE-2021-28683 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- >= 1.16.2, < 1.16.3, >= 1.17.1, < 1.17.2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |