CVE-2021-29108 json
There is an privilege escalation vulnerability in organization-specific logins in Esri Portal for ArcGIS versions 10.9 and below.
published 2021-10-01 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-15749
- cvss
- 8.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.8%
- EPSS 0.8% chance of exploitation in 30 days, percentile 57%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- Esri Portal for ArcGIS <10.9.0
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 18 mo ago
Exploit prediction
0.81% chance of exploitation in the next 30 days, higher than 57% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.5 | AV:N/AC:L/Au:S/C:P/I:P/A:P |
Affected products
- Esri Portal for ArcGIS
Classification
- Weakness
-
- CWE-347 Improper Verification of Cryptographic Signature
References
-
esri.com
/arcgis-blog/products/arcgis-enterprise/administration/Portal-for-ArcGIS-Security-2021-Update-1-Patch/
vendor-advisory
-
downloads.esri.com
/RESOURCES/ENTERPRISEGIS/Organization-Specific_Logins_FAQs.pdf
product, technical-description
Sources
- CVE List CVE-2021-29108
- NVD CVE-2021-29108
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