CVE-2021-28235

criticalpriority · attend · 50EPSS 0.016 · 76 %ileexploit · PoCDEEURUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · PoC

Likely / severe?

1.62% (76th) EPSS

CVSS 9.8 · critical

Is it mine?

13 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · fstec_bdu · osv

EPSS · scored 2026-10-27

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

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.19.8criticalAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · OSV

v3.19.3criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Psecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-287USprimaryCWE-287USCWE-287US

exploits (1)

Public proof-of-concept and weaponised exploit code.

h3ck13r/CVE-2021-28235CVE-2021-28235 PoCPoC · poc_in_github

affected products (13)

Products and version ranges known to be affected.

Oracle Linuxall versionscert_bundDEcpe:/o:oracle:linux:-
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
Red Hat OpenShift Container Platform < 4.12.21all versionscert_bundDEcpe:/a:redhat:openshift:container_platform_4.12.21
Red Hat OpenShift Container Platform < 4.13.3all versionscert_bundDEcpe:/a:redhat:openshift:container_platform_4.13.3
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
n/a n/a≤ n/aenisa_euvdEU
Cloud Native Computing Foundation Etcd≤ 3.4.10fstec_bduRU
АО «ИВК» Альт 8 СПall versionsfstec_bduRU
АО «НППКТ» ОСОН ОСнова Оnyx≤ 3.1fstec_bduRU
ООО «Ред Софт» РЕД ОС≤ 7.3fstec_bduRU
etcd etcd= 3.4.10nvdUScpe:2.3:a:etcd:etcd:*:*:*:*:*:*:*:*
Bitnami etcd3.4.10 → 3.4.11osvUSpkg:bitnami/etcd
Go go.etcd.io/etcd/v3all versionsosvUSpkg:golang/go.etcd.io/etcd/v3

advisories (3)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-1373Red Hat OpenStack Platform : Mehrere SchwachstellenDeutsch2023-06-05csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in der Red Hat OpenStack Platform ausnutzen, um seine Privilegien zu erhöhen, einen Denial of Service zu verursachen oder Informationen offenzulegen.
GHSA-gmph-wf7j-9gcmEtcd-io Improper Authentication vulnerability2023-04-04ghsa · osvUS
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](https://github.com/etcd-io/etcd/blob/main/CHANGELOG/CHANGELOG-3.5.md#etcd-server) and was also backported to [3.4](https://github.com/etcd-io/etcd/pull/15655) and [3.5](https://github.com/etcd-io/etcd/pull/15653).
BIT-etcd-2021-282352024-03-06vendor · osvUS
Authentication vulnerability found in Etcd-io v.3.4.10 allows remote attackers to escalate privileges via the debug function.

also known as (6)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu osv cert_bund nvd NVD CVE.org MITRE

published 2023-04-04modified 2026-07-09

related (7,715)

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+7710 more

references (18)

External citations — patches, advisories, analysis.

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