BUG-000182936 - ArcGIS Server has a security vulnerability.

published 2026-10-26 13 d ago modified 2026-10-26 13 d ago also EUVD-2026-110060

cvss: 5.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 21%
public exploits: 0; none known

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.

Patch / fix

fixed in 1

Esri ArcGIS Server 12.0

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: partial
Assessed: 13 d ago (2026-10-26)

Exploit prediction

0.29% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	5.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Affected products

Esri ArcGIS Server

Classification

Weakness

CWE-285 Improper Authorization

References

esri.com /arcgis-blog/products/trust-arcgis/administration/october-2026-arcgis-security-bulletin

Sources

CVE List CVE-2026-33522
NVD CVE-2026-33522

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary