How severe is CVE-2021-29102?

CVE-2021-29102 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2021-29102 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-29102?

CVE-2021-29102 affects Esri Arcgis Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-29102?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-29102 published?

CVE-2021-29102 was published on 2021-07-11 and last updated on 2026-06-17.

CVE-2021-29102

CVE-2021-29102 is a critical-severity vulnerability in Esri Arcgis Server with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-918.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
CVSS v2: 6.4
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-918
Affected product: Esri Arcgis Server
Published: 2021-07-11
Last modified: 2026-06-17

Description

A Server-Side Request Forgery (SSRF) vulnerability in ArcGIS Server Manager version 10.8.1 and below may allow a remote, unauthenticated attacker to forge GET requests to arbitrary URLs from the system, potentially leading to network enumeration or facilitating other attacks.

Frequently asked questions

What is CVE-2021-29102?: A Server-Side Request Forgery (SSRF) vulnerability in ArcGIS Server Manager version 10.8.1 and below may allow a remote, unauthenticated attacker to forge GET requests to arbitrary URLs from the system, potentially leading to network enumeration or facilitating other attacks.
How severe is CVE-2021-29102?: CVE-2021-29102 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2021-29102 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-29102?: CVE-2021-29102 affects Esri Arcgis Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-29102?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-29102 published?: CVE-2021-29102 was published on 2021-07-11 and last updated on 2026-06-17.

References

https://www.esri.com/arcgis-blog/products/arcgis-enterprise/administration/arcgis-server-security-2021-update-1-patch/

Affected products (1)

cpe:2.3:a:esri:arcgis_server:*:*:*:*:*:*:x64:*

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