Security readout for executives and security teams
Plain-English summary
This issue can let an unauthenticated remote person see hidden field names in Esri ArcGIS feature layers. The sources state it reveals field names, not feature data. Business impact is mainly information disclosure that may expose internal schema or sensitive naming conventions.
Executive priority
Treat this as a medium-priority exposure reduction item. It is not described as data theft or system compromise, but it can leak schema details that may help reconnaissance against GIS services.
Technical view
CVE-2021-29115 is CWE-200 in the ArcGIS Service Directory for Esri ArcGIS Enterprise 10.9.0 and below. CVSS 3.0 is 5.3: network reachable, low complexity, no privileges, no user interaction, low confidentiality impact, no integrity or availability impact.
Likely exposure
Organizations exposing ArcGIS Enterprise or ArcGIS Server Service Directory functionality, especially versions 10.9.0 and below, are the likely exposure group. The bundle’s affected field says ArcGIS Server “All,” while the description narrows versions to ArcGIS Enterprise 10.9.0 and below.
Exploitation context
The provided sources do not show CISA KEV listing or active exploitation. The issue is remotely reachable and unauthenticated by CVSS, but the documented disclosure is limited to hidden field names, not feature records.
Researcher notes
The source bundle is limited. CVE text says hidden field names may be viewed, but features are not disclosed. Resolve the version scope discrepancy between “ArcGIS Server: All” and “ArcGIS Enterprise 10.9.0 and below” using Esri’s advisory before final scoping.
Mitigation direction
- Review Esri’s ArcGIS Server Security 2021 Update 2 Patch guidance.
- Apply the Esri patch where it matches deployed versions.
- Prioritize internet-facing ArcGIS Enterprise or ArcGIS Server systems.
- Confirm vendor guidance for any unsupported or unclear versions.
- Document remediation status for affected GIS services.
Validation and detection
- Inventory ArcGIS Enterprise and ArcGIS Server versions.
- Identify systems at version 10.9.0 or below.
- Confirm whether the Esri security patch is installed.
- Check whether Service Directory endpoints are externally reachable.
- Verify hidden field names are no longer exposed after remediation.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-200: Information exposure and cloud metadata lookup
Information exposure and SSRF weaknesses can make discovery, cloud metadata, and credential material review relevant. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2021-29115 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.3 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N3.91.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
5.3MediumVector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.esri.com/arcgis-blog/products/arcgis-enterprise/administration/arcgis-server-security-2021-update-2-patch-is-now-availableCVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Exposure of Sensitive Information to an Unauthorized Actor
Exposure of Sensitive Information to an Unauthorized Actor represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.