CVE-2021-29108
mediumpriority · track · 26EPSS 0.008 · 57 %ileEUUSEPSS · scored 2026-10-27
There is an privilege escalation vulnerability in organization-specific logins in Esri Portal for ArcGIS versions 10.9 and below that may allow a remote, authenticated attacker who is able to intercept and modify a SAML assertion to impersonate another account (XML Signature Wrapping Attack). In addition patching, Esri also strongly recommends as best practice for SAML assertions to be signed and encrypted.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5.5–8.8
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (2)
Products and version ranges known to be affected.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (7)
External citations — patches, advisories, analysis.
- https://downloads.esri.com/RESOURCES/ENTERPRISEGIS/Organization-Specific_Logins_FAQs.pdfcnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2021-29108cnnvd
- https://www.esri.com/arcgis-blog/products/arcgis-enterprise/administration/Portal-for-ArcGIS-Security-2021-Update-1-Patch/cnnvd
- https://downloads.esri.com/RESOURCES/ENTERPRISEGIS/Organization-Specific_Logins_FAQs.pdfenisa_euvd
- https://www.esri.com/arcgis-blog/products/arcgis-enterprise/administration/Portal-for-ArcGIS-Security-2021-Update-1-Patch/enisa_euvd
- https://downloads.esri.com/RESOURCES/ENTERPRISEGIS/Organization-Specific_Logins_FAQs.pdfProductTechnical Descriptionnvd
- https://www.esri.com/arcgis-blog/products/arcgis-enterprise/administration/Portal-for-ArcGIS-Security-2021-Update-1-Patch/Vendor Advisorynvd
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