CVE-2021-28235
etcd: Authentication vulnerability found in Etcd-io v.3.4.10 allows remote attackers to escalate privileges via the debug f...
CVE-2021-28235 is fixed in 4 products on 1 platform, first by etcd 3.2.17+dfsg-1ubuntu0.1+esm2, released April 4, 2023. It is not reported as exploited. Patch Radar priority: Urgent.
Urgent
CVSS
9.8
critical
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0162
76th percentile
Authentication vulnerability found in Etcd-io v.3.4.10 allows remote attackers to escalate privileges via the debug function.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| etcd · Debian 13.5 (trixie) | 3.4.30-1 | DEBIAN-CVE-2021-28235 | Apr 4, 2023 |
| etcd · Debian 14 | 3.4.30-1 | DEBIAN-CVE-2021-28235 | Apr 4, 2023 |
| etcd · Ubuntu 18.04.6 LTS (bionic) | 3.2.17+dfsg-1ubuntu0.1+esm2 | etcd 3.2.17+dfsg-1ubuntu0.1+esm2 | Apr 4, 2023 |
| etcd · Ubuntu 20.04 LTS (focal) | 3.2.26+dfsg-6ubuntu0.2+esm1 | etcd 3.2.26+dfsg-6ubuntu0.2+esm1 | Apr 4, 2023 |
| etcd · Ubuntu 22.04.1 LTS (jammy) | 3.3.25+dfsg-7ubuntu0.22.04.1+esm1 | etcd 3.3.25+dfsg-7ubuntu0.22.04.1+esm1 | Apr 4, 2023 |
| etcd · opensuse-leap 15.6 | 3.5.12-bp156.4.3.1 | OPENSUSE-SU-2025:0003-1 | Jan 7, 2025 |
| etcd-client · Ubuntu 18.04.6 LTS (bionic) | 3.2.17+dfsg-1ubuntu0.1+esm2 | etcd-client 3.2.17+dfsg-1ubuntu0.1+esm2 | Apr 4, 2023 |
| etcd-client · Ubuntu 20.04 LTS (focal) | 3.2.26+dfsg-6ubuntu0.2+esm1 | etcd-client 3.2.26+dfsg-6ubuntu0.2+esm1 | Apr 4, 2023 |
| etcd-client · Ubuntu 22.04.1 LTS (jammy) | 3.3.25+dfsg-7ubuntu0.22.04.1+esm1 | etcd-client 3.3.25+dfsg-7ubuntu0.22.04.1+esm1 | Apr 4, 2023 |
| etcd-server · Ubuntu 18.04.6 LTS (bionic) | 3.2.17+dfsg-1ubuntu0.1+esm2 | etcd-server 3.2.17+dfsg-1ubuntu0.1+esm2 | Apr 4, 2023 |
| etcd-server · Ubuntu 20.04 LTS (focal) | 3.2.26+dfsg-6ubuntu0.2+esm1 | etcd-server 3.2.26+dfsg-6ubuntu0.2+esm1 | Apr 4, 2023 |
| etcd-server · Ubuntu 22.04.1 LTS (jammy) | 3.3.25+dfsg-7ubuntu0.22.04.1+esm1 | etcd-server 3.3.25+dfsg-7ubuntu0.22.04.1+esm1 | Apr 4, 2023 |
| golang-etcd-server-dev · Ubuntu 18.04.6 LTS (bionic) | 3.2.17+dfsg-1ubuntu0.1+esm2 | golang-etcd-server-dev 3.2.17+dfsg-1ubuntu0.1+esm2 | Apr 4, 2023 |
| golang-etcd-server-dev · Ubuntu 20.04 LTS (focal) | 3.2.26+dfsg-6ubuntu0.2+esm1 | golang-etcd-server-dev 3.2.26+dfsg-6ubuntu0.2+esm1 | Apr 4, 2023 |
| golang-etcd-server-dev · Ubuntu 22.04.1 LTS (jammy) | 3.3.25+dfsg-7ubuntu0.22.04.1+esm1 | golang-etcd-server-dev 3.3.25+dfsg-7ubuntu0.22.04.1+esm1 | Apr 4, 2023 |
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