CVE-2021-3557

mediumpriority · track · 26EPSS 0.008 · 55 %ileEUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.76% (55th) EPSS
CVSS 4 · medium
Is it mine?
9 products
Check your exposure
Who says so?
4 sources
cnnvd · enisa_euvd · nvd · redhat_csaf

EPSS · scored 2026-10-27

A flaw was found in argocd. Any unprivileged user is able to deploy argocd in their namespace and with the created ServiceAccount argocd-argocd-server, the unprivileged user is able to read all resources of the cluster including all secrets which might enable privilege escalations. The highest threat from this vulnerability is to data confidentiality.

01

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

  • Fixedopenshift-gitops-1/applicationset-rhel8@sha256:5a65f7aae51eb0d14a5d650f889ee6eef6f5b204224c88d8679392b8d475a742_amd64 as a component of Red Hat OpenShift GitOps 1.1redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2021:2053
  • Fixedopenshift-gitops-1/argocd-rhel8@sha256:aed92fa8409874ab61c6c4ac1ace9cced6eb58137d8ed5a4719abdf9de85ef5a_amd64 as a component of Red Hat OpenShift GitOps 1.1redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2021:2053
  • Fixedopenshift-gitops-1/gitops-operator-bundle@sha256:1170e203046b1a08f851038c02e1175f93abe9ff57a1e5669b35ccfb87dc8644_amd64 as a component of Red Hat OpenShift GitOps 1.1redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2021:2053
  • Fixedopenshift-gitops-1/gitops-rhel8-operator@sha256:bcb3dfc723916f526e86dbf722e4f10af4bea5d72670e59062aa99a0585450dd_amd64 as a component of Red Hat OpenShift GitOps 1.1redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2021:2053
  • Fixedopenshift-gitops-1/gitops-rhel8@sha256:f9e96aea3643b7e6d91908f918a212b85c7257f6705b51a0cf31bb611c2a1be7_amd64 as a component of Red Hat OpenShift GitOps 1.1redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2021:2053
  • Fixedopenshift-gitops-1/kam-delivery-rhel8@sha256:2201877ae45f8024bc157825fb5b28afddba65bd7e8b842367e3a8fad325766a_amd64 as a component of Red Hat OpenShift GitOps 1.1redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2021:2053
02

cvss

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

6.5
010

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

v2.04mediumAV:N/AC:L/Au:S/C:P/I:N/A:Nprimary · NVD / NIST USexploitability 8 · impact 2.9
v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 3.6
v3.16mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)
v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:Nsecondary · Red Hat Product Security US
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-732USprimaryCWE-732US
04

affected products (9)

Products and version ranges known to be affected.

05

advisories (1)

Vendor and ecosystem advisories describing this.

  • RHSA-2021:2053Red Hat Security Advisory: Red Hat OpenShift GitOps security update2021-05-19csaf · redhat_csafUS

    An update is now available for Red Hat OpenShift GitOps 1.1. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

06

also known as (3)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdnvdredhat_csafNVDCVE.orgMITRE
published 2022-02-16modified 2026-06-17
09

references (10)

External citations — patches, advisories, analysis.

scry

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