CVE-2021-29096

Name: CVE-2021-29096
Creator: NVD / NIST
Published: 2021-03-25T19:15:14.533+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 1.52%

Last modified Jun 17, 2026

CVE-2021-29096 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. A use-after-free vulnerability when parsing a specially crafted file in Esri ArcReader, ArcGIS Desktop, ArcGIS Engine 10.8.1 (and earlier) and ArcGIS Pro 2.7 (and earlier) allows an unauthenticated attacker to achieve arbitrary code execution in the context of the current user.. EPSS estimates a 1.52% chance of exploitation in the next 30 days.

Description

A use-after-free vulnerability when parsing a specially crafted file in Esri ArcReader, ArcGIS Desktop, ArcGIS Engine 10.8.1 (and earlier) and ArcGIS Pro 2.7 (and earlier) allows an unauthenticated attacker to achieve arbitrary code execution in the context of the current user.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

1.52%

71.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Esri	Arcgis Engine	<= 10.8.1
Esri	Arcgis Pro	<= 2.7
Esri	Arcmap	<= 10.8.1
Esri	Arcreader	<= 10.8.1

References

https://www.esri.com/arcgis-blog/products/arcgis/administration/security-advisory-general-raster/Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-370/Third Party Advisory, VDB Entry
https://www.esri.com/arcgis-blog/products/arcgis/administration/security-advisory-general-raster/Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-370/Third Party Advisory, VDB Entry

Timeline

Published: Mar 25, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-29096?

How severe is CVE-2021-29096?

CVE-2021-29096 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 1.52% probability of exploitation in the next 30 days.

How do I fix CVE-2021-29096?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-29096?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST