Home/CVE/Authentication vulnerability found in Etcd-io v.3.4.10 allows remote attackers to escalate privileges via the debug func
CVE

CVE-2021-28235

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

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

CRITICAL · CVSS 9.8 EPSS 0.00338
Schedule remediation
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-287Improper Authentication
▤

Affected Products & Versions

1
etcdall versions
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Go go.etcd.io/etcd/v3 CRITICAL
▣

Scoring & Timeline

9.8
CRITICAL · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD04 Apr 2023 · 03:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

11
suse-csafopenSUSE-SU-2025:0003-1
suse-csafSUSE-SU-2024:3656-1
suse-csafopenSUSE-SU-2024:12896-1
suse-csafopenSUSE-SU-2024:13369-1
suse-csafopenSUSE-SU-2024:13370-1
🔗

References & Sources

5
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://etcd.comBroken Link
https://github.com/etcd-io/etcdProduct
https://github.com/etcd-io/etcd/pull/15648
https://github.com/lucyxss/etcd-3.4.10-test/blob/master/temp4cj.pngProduct
https://github.com/lucyxss/etcd-3.4.10-test/blob/master/temp4cj_2.pngProduct
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