CVE-2026-9181: Esri ArcGIS Server contains a directory traversal vulnerability

Q: How do I fix CVE-2026-9181?

arcgis server: upgrade to newer than 12.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-9181 being exploited?

CVE-2026-9181 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-9181 affect?

CVE-2026-9181 affects arcgis server. Severity is critical (CVSS 9.8). Esri ArcGIS Server contains a directory traversal vulnerability. ArcGIS Enterprise on Kubernetes is not impacted. An unauthenticated attacker could exploit this issue by sending crafted path parameters. Successful exploitation could allow o

Q: How urgent is CVE-2026-9181?

Priority 59/100. Critical severity; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

This month

CRITICAL 9.8REMOTEUPGRADE

CVE-2026-9181 is a critical-severity flaw (CVSS 9.8) affecting arcgis server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Esri ArcGIS Server contains a directory traversal vulnerability. ArcGIS Enterprise on Kubernetes is not impacted. An unauthenticated attacker could exploit this issue by sending crafted path parameters. Successful exploitation could allow overwriting sensitive files on the system. Abuse of this issue can allow full administrative access to ArcGIS Server, with high impact to confidentiality, integrity, and availability. This issue impacts all vers

Why this priority

Critical severity
CISA SSVC: automatable with total technical impact
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.2% (top 32%)
CISA exploited list	No
Weakness	CWE-22
Published	2026-07-06
Last modified	2026-10-25

Publisher (CNA): Environmental Systems Research Institute, Inc. · Vendor: esri

Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-06 19:17 UTCPublished CVE record published
2026-10-25 20:10 UTCUpdated Record last modified

esri arcgis server UPGRADE

Affected: <= 12.0

Fixed in: newer than 12.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy arcgis-server || rpm -q arcgis-server || arcgis-server --version

2. UPGRADE to newer than 12.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade arcgis-server

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade arcgis-server

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Exact fixes by distribution

Fedora 46 · python-apprise · FIXED · 2.1.0-1.fc46 · FEDORA-2026-ef67a72c5d · source

sudo dnf upgrade --advisory=FEDORA-2026-ef67a72c5d

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-9181?

arcgis server: upgrade to newer than 12.0. Exact commands for each OS are on this page.

Is CVE-2026-9181 being exploited?

CVE-2026-9181 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-9181 affect?

CVE-2026-9181 affects arcgis server. Severity is critical (CVSS 9.8). Esri ArcGIS Server contains a directory traversal vulnerability. ArcGIS Enterprise on Kubernetes is not impacted. An unauthenticated attacker could exploit this issue by sending crafted path parameters. Successful exploitation could allow o

How urgent is CVE-2026-9181?

Priority 59/100. Critical severity; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

Software pages

Kubernetes vulnerabilities

Related CVEs

CVE-2026-9182 CRITICAL 9.8 UPGRADE Esri ArcGIS Server contains an unrestricted file upload vulnerability

References

← Back to latest CVEs