TI-2026-80540 Aliases CVE-2026-33522 GHSA-hjvv-pqmr-47w6

Improper authorization in Esri ArcGIS Server allows metadata updates

LOW 30CWE-285Published 2026-10-26 · Updated 2026-10-26

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: None · Low · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-285.

Summary

Esri ArcGIS Server from 11.3 before 12.0 is affected. Improper authorization (CWE-285) lets a remote, unauthenticated attacker update service metadata.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00288 21st percentileScored 2026-11-07

Fix Fixed ArcGIS Server (Esri): 12.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Esri	ArcGIS Server	11.3 to before 12.0	12.0	Patch available	CNA

ArcGIS Server VendorEsri Affected 11.3 to before 12.0 Fixed in 12.0 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:esri:arcgis_server::::::::	—	—	Esri

cpe:2.3:a:esri:arcgis_server:*:*:*:*:*:*:*:* Versions — — ·Esri

Remediation

Upgrade Esri ArcGIS Server to version 12.0, which is the listed fixed version. Esri provides a patch for ArcGIS Server versions 12.0, 11.5 and 11.3, and users on other versions are advised to upgrade and apply the patch.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Fix · CNA ArcGIS Server (Esri) Fixed in 12.0

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Release · 2026-10-26
Esri ArcGIS Server 12.0
2 records Highest priority Priority LOW 2 LOW
Other records, highest priority first
- TI-2026-80539 Denial of service in Esri ArcGIS Server via crafted requestsPriority LOW 39
Show all 2 records →

Timeline

2026-10-26 Threatist record created from CVE-2026-33522
2026-10-26 CISA SSVC decision points changed
2026-10-27 Alias added: GHSA-hjvv-pqmr-47w6

References

Other 1

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

TI-2024-16901 Portal for ArcGIS has a directory traversal vulnerability. CVSS 3.1CRITICAL 9.9
TI-2012-01450 ESRI ArcMap 9 and ArcGIS 10.0.2.3200 and earlier does not properly prompt users before… CVSS 2.0HIGH 9.3
TI-2007-01695 Buffer overflow in the ArcSDE service (giomgr) in Environmental Systems Research… CVSS 2.0HIGH 10.0
TI-2026-08070 Directory Traversal in ArcGIS Server CVSS 3.1CRITICAL 9.8
TI-2026-11074 Missing authentication in Esri Portal for ArcGIS CVSS 3.1CRITICAL 9.8
TI-2025-35724 BUG-000179884 - There is a security vulnerability in ArcGIS Server Feature Services. CVSS 3.1CRITICAL 10.0

See all 194 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences