CVE-2026-33521
highpriority · track · 30EPSS 0.004 · 39 %ileDEEPSS · scored 2026-10-27
There is s denial of service vulnerability in Esri ArcGIS Server versions 12.0 and prior that may allow a remote, unauthenticated attacker to supply crafted requests that may, under exceptional circumstances, consume all available worker threads and deny service to users. A patch is provided for ArcGIS Server software in General Availability and Extended support status, which includes versions 12.0, 11.5, 11.3, and 11.1. 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
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.9–7.5
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (2)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2026-3965ESRI ArcGIS: Mehrere SchwachstelleDeutsch2026-10-14csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in ESRI ArcGIS ausnutzen, um einen SQL-Injection oder Cross Site Scripting Angriffe durchzuführen, Sicherheitsmaßnahmen zu umgehen und einen Denial of Service zu verursachen.
sources
Which sources assert this record, and when.
references (1) nvd
External citations — patches, advisories, analysis.
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