How severe is CVE-2021-29094?

CVE-2021-29094 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-29094 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-29094?

CVE-2021-29094 affects Esri Arcgis Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-29094?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-29094 published?

CVE-2021-29094 was published on 2021-03-25 and last updated on 2026-06-17.

CVE-2021-29094

CVE-2021-29094 is a medium-severity vulnerability in Esri Arcgis Server with a CVSS 3.x base score of 6.8. 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-120.

Key facts

Severity: Medium (CVSS 3.x base score 6.8)
CVSS v2: 6.0
EPSS exploit prediction: 1% (59th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Esri Arcgis Server
Published: 2021-03-25
Last modified: 2026-06-17

Description

Multiple buffer overflow vulnerabilities when parsing a specially crafted file in Esri ArcGIS Server 10.8.1 (and earlier) allows an authenticated attacker with specialized permissions to achieve arbitrary code execution in the context of the service account.

Frequently asked questions

What is CVE-2021-29094?: Multiple buffer overflow vulnerabilities when parsing a specially crafted file in Esri ArcGIS Server 10.8.1 (and earlier) allows an authenticated attacker with specialized permissions to achieve arbitrary code execution in the context of the service account.
How severe is CVE-2021-29094?: CVE-2021-29094 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-29094 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-29094?: CVE-2021-29094 affects Esri Arcgis Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-29094?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-29094 published?: CVE-2021-29094 was published on 2021-03-25 and last updated on 2026-06-17.

References

https://www.esri.com/arcgis-blog/products/arcgis-enterprise/administration/security-advisory-server-image

Affected products (1)

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

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