Medium severity · published Oct 26, 2026
CVE-2026-33522
BUG-000182936 - ArcGIS Server has a security vulnerability.
New
5.3
CVSS
0.3%
EPSS
No
On KEV
Description
Esri ArcGIS Server versions 11.3 to 12.0 ONLY allows a remote, unauthenticated attacker to update service metadata. A patch is provided for ArcGIS Server software in General Availability and Extended support status, which includes versions 12.0, 11.5, and 11.3. Other versions are in mature or retired status, which are not patch eligible. Users working with unlisted versions are advised to upgrade and apply the patch.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 21% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AS
ArcGIS Server · Esri
11.3 before 12.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-33522
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-33522
www.esri.com
https://www.esri.com/arcgis-blog/products/trust-arcgis/administration/october-2026-arcgis-security-bulletin
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