EUVD-2026-41897
GHSA-8h42-h5vq-h5gv
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Unauthenticated remote traversal over HTTP (AV:N/AC:L/PR:N/UI:N) yields high file-disclosure confidentiality impact with no integrity or availability effect (C:H/I:N/A:N).
Primary rating from Vendor (Esri).
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Lifecycle Timeline
6DescriptionNVD
ArcGIS Server contains a directory traversal vulnerability. An unauthenticated attacker could exploit this issue by sending crafted path parameters. Successful exploitation could allow access to sensitive files on the system. This issue impacts all versions of ArcGIS Server 12.0 and prior.
AnalysisAI
Unauthenticated file disclosure in Esri ArcGIS Server (all versions 12.0 and prior) lets remote attackers read sensitive files by supplying crafted path parameters that escape the intended directory. The flaw is network-reachable with no authentication or user interaction and, per CISA's SSVC framework, is automatable with total technical impact, though no public exploit has been identified and EPSS exploitation probability remains modest at 0.72%. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No special conditions - remote unauthenticated exploitation against ArcGIS Server (all versions 12.0 and prior), requiring only network reachability to the server's HTTP/REST interface and a crafted path parameter containing traversal sequences (AV:N/AC:L/PR:N/UI:N). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The signals are broadly consistent in pointing to a genuine but not emergency-tier priority. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker on the network sends a single crafted HTTP request to an exposed ArcGIS Server endpoint, embedding directory-traversal sequences in a path parameter to step outside the service directory and retrieve sensitive files such as configuration or credential material. Because no authentication or user interaction is required and the attack is automatable, it could be scripted against many internet-facing servers, though no public exploit code has been identified at time of analysis. |
| Remediation | Apply the fixed release identified in Esri's May 2026 ArcGIS security bulletin (https://www.esri.com/arcgis-blog/products/arcgis-enterprise/administration/may-2026-arcgis-security-bulletin); because the input does not state an exact patched build number, treat the bulletin as the source of the specific version and upgrade all ArcGIS Server instances beyond 12.0 to that patched release rather than relying on an invented version. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
24 hours: Identify and inventory all ArcGIS Server instances (versions 12.0 and prior) in production environment. …
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External POC / Exploit Code
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