Security readout for executives and security teams
Plain-English summary
CVE-2021-29099 is a SQL injection issue in some ArcGIS Server configurations, affecting version 10.8.1 and earlier. A remote unauthenticated attacker could send crafted web requests that disclose unintended information. The CVE states this does not expose customer datasets, and file-based or tile-cached services are unaffected.
Executive priority
Treat this as a moderate-priority remediation item. It is remotely reachable and unauthenticated, but the documented impact is limited information disclosure and sources do not show active exploitation. Prioritize public-facing affected servers.
Technical view
The vulnerability is CWE-89 SQL injection in Esri ArcGIS Server 10.8.1 and earlier, CVSS 5.3. It is network-accessible, low-complexity, needs no privileges or user interaction, and impacts confidentiality only. Exposure depends on ArcGIS Server configuration and data source type.
Likely exposure
Highest concern is internet-facing ArcGIS Server 10.8.1 or earlier using affected service configurations. The provided CVE text says services using file geodatabases, shapefiles, or tile cached services are unaffected, narrowing exposure for those deployments.
Exploitation context
The provided bundle does not show CISA KEV listing or cited evidence of active exploitation. The attack path is remote web requests against affected ArcGIS Server configurations, with limited confidentiality impact according to the CVSS vector.
Researcher notes
Evidence supports affected ArcGIS Server 10.8.1 and earlier in some configurations. The bundle does not include fixed version details, exploit telemetry, or proof-of-concept material. Avoid assuming customer dataset exposure because the CVE text explicitly excludes that impact.
Mitigation direction
- Inventory ArcGIS Server deployments and identify versions 10.8.1 or earlier.
- Review Esri advisory E21-03 for vendor-supported updates or mitigations.
- Prioritize remediation for internet-facing or broadly reachable ArcGIS Server instances.
- Confirm whether services use unaffected file-based or tile-cached data sources.
- Limit external access to ArcGIS Server services where business use allows.
Validation and detection
- Verify ArcGIS Server version on each deployment.
- Map published services to their backing data source types.
- Confirm whether file geodatabases, shapefiles, or tile cached services are exclusively used.
- Review ArcGIS Server access logs for unusual request patterns.
- Document remediation status against Esri advisory E21-03.
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-89: Database access and collection lookup
Injection into data stores can inform collection, data access, and exfiltration detection reviews. 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 lookupDatabase behavior lookup
The CVE wording references database injection or access, so collection and exfiltration review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-29099 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/security-advisory-e21-03-server-sql/CVE 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.
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.