Etcd-io Improper Authentication vulnerability

CRITICAL 9.8CVE-2021-28235 · BIT-etcd-2021-28235 · GHSA-gmph-wf7j-9gcm · Published 04/04/2023 · updated 09/07/2026

In short

CVE-2021-28235 is a CRITICAL (CVSS 9.8) vulnerability affecting go.etcd.io/etcd/v3, etcd (etcd).
Chance of exploitation in the next 30 days (EPSS): 1.6%, higher than 76.1% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
go.etcd.io/etcd/v3 Go	`= 3.4.10`	No fix yet
etcd etcd	`= 3.4.10`	No fix yet

Authentication vulnerability found in Etcd-io v.3.4.10 allows remote attackers to escalate privileges via the debug function.

This has been fixed in v.3.5.8 and was also backported to 3.4 and 3.5.

NVD description

Authentication vulnerability found in Etcd-io v.3.4.10 allows remote attackers to escalate privileges via the debug function.

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Package

Affected versions

Patched versions

= 3.4.10

No fix yet

= 3.4.10

No fix yet

Description

Authentication vulnerability found in Etcd-io v.3.4.10 allows remote attackers to escalate privileges via the debug function.

This has been fixed in v.3.5.8 and was also backported to 3.4 and 3.5.

NVD description

Authentication vulnerability found in Etcd-io v.3.4.10 allows remote attackers to escalate privileges via the debug function.

More vulnerabilities in go.etcd.io/etcd/v3

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