CVE-2021-21830
CVSS v3
9.8
CRITICAL
EPSS Score
2.3 %
exploit probability, as of 2026-10-19
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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Affected and fixed versions
Packages from OSV.dev and products from the vendors' CSAF advisories.
version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.
Vendor advisories
Schneider Electric EcoStruxure, EcoStruxure Process Expert, SCADAPack RemoteConnect for x70
EcoStruxure Control Expert: All versions (including former Unity Pro) prior to V15.1 HF001 · EcoStruxure Process Expert: All versions (including former HDCS) prior to V2021 · SCADAPack RemoteConnect for x70: All versions prior to R2.7.3
Description
A heap-based buffer overflow vulnerability exists in the XML Decompression LabelDict::Load functionality of AT&T Labs’ Xmill 0.7. A specially crafted XMI file can lead to remote code execution. An attacker can provide a malicious file to trigger this vulnerability.
Technical details
- Published
- 2021-08-13
Frequently asked questions
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