CVE-2021-29115Network attack vector

Field-name disclosure via retained editing-template references

Published Dec 7, 2021 · Updated Apr 10, 2025

Information exposure in Esri ArcGIS Server 10.9.0 and earlier allows remote attackers to view hidden field names via the Services Directory. The directory retains references to fields marked invisible in a hosted feature service view within its available editing templates. A hosted feature service view with an invisible field is required, and only field names, not feature records, are disclosed.

CVSS severity5.3
Medium
EPSS probability2.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Information exposure in Esri ArcGIS Server 10.9.0 and earlier allows remote attackers to view hidden field names via the Services Directory. The directory retains references to fields marked invisible in a hosted feature service view within its available editing templates. A hosted feature service view with an invisible field is required, and only field names, not feature records, are disclosed.

The record

CVE
CVE-2021-29115
Published
Dec 7, 2021
Updated
Apr 10, 2025
Vendor
Esri
Product
ArcGIS Server
Classifications
CWE-668, CWE-200
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 7, 2021CVE publishedPublication date reported by the CVE source.
  2. Apr 10, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=All <=10.9.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Esri · ArcGIS Serverversion=All <=10.9.0

Published CVSS scores

4.1EsriCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/RL:O/RC:C
5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-668Exposure of Resource to Wrong Sphere
CWE-200Exposure of Sensitive Information to an Unauthorized Actor

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo