VDB
CVE-2021-21827
CVE-2021-21827
PUBLISHED
CVSS 8.1 HIGH
Reported by talos · Published August 20, 2021
A heap-based buffer overflow vulnerability exists in the XML Decompression DecodeTreeBlock functionality of AT&T Labs Xmill 0.7. Within `DecodeTreeBlock` which is called during the decompression of an XMI file, a UINT32 is loaded from the file and used as trusted input as the length of a buffer. An attacker can provide a malicious file to trigger this vulnerability.
Risk scores
CVSS 3.0
8.1
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
| Vendor | Product | Versions |
|---|---|---|
| n/a | AT&T | AT&T Labs Xmill 0.7, Schneider Electric EcoStruxure Control Expert 15 |
| n/a | AT&T | AT&T Labs Xmill 0.7, Schneider Electric EcoStruxure Control Expert 15 |
Timeline
- Aug 12, 2021 CVE Published
- Aug 21, 2021 EPSS Score (30 in total, the first dated here)
- Aug 21, 2021 PoC Published (3 in total, the first dated here)
- Aug 3, 2024 CVE Updated
- Jun 1, 2026 Security Advisory
- Aug 26, 2026 Coalition ESS Score
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln CVE-2021-21827
vulnetix vdb fixes CVE-2021-21827Or with curl, using the org id and key from your account page:
curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
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