CVE-2021-21826

highPriorität · verfolgen · 39EPSS 0.011 · 66. PerzentilEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

1.14% (66th) EPSS

CVSS 7.5 · high

Is it mine?

12 products

Prüfe deine Angriffsfläche

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cisa_csaf_ot

EPSS · bewertet 2026-10-27

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.

Behebungen

Hersteller-Fix, Mitigation oder Workaround, wie von den Quellen veröffentlicht.

Noch kein Hersteller-Fix; eine Mitigation ist verfügbar.

MitigationEcoStruxure Control Expertcisa_csaf_ot
AT&T Labs have stated this software is longer supported and recommends vendors to move away from using it.
MitigationEcoStruxure Process Expertcisa_csaf_ot
AT&T Labs have stated this software is longer supported and recommends vendors to move away from using it.
MitigationSCADAPack RemoteConnect for x70cisa_csaf_ot
AT&T Labs have stated this software is longer supported and recommends vendors to move away from using it.

cvss

Technischer Schweregrad, 0–10. Eine Zeile je Quelle.

9.8

010

Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · high–critical · 7.5–9.8

v2.07.5highAV:N/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USAusnutzbarkeit 10 · Auswirkung 6.4

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USAusnutzbarkeit 3.9 · Auswirkung 5.9

v3.08.1highCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · talos-cna@cisco.com USAusnutzbarkeit 2.2 · Auswirkung 5.9

v3.08.1highCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · CISA US

v3.08.1highCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.18.1highAV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.19criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

schwächen

Die CWE-Schwächeklassen, zu denen dies gehört.

CWE-787USprimärCWE-120USCWE-120USCWE-120USCWE-787US

betroffene Produkte (12)

Betroffene Produkte und Versionsbereiche.

EcoStruxure Control Expert: All versions (including former Unity Pro) prior to V15.1 HF001alle Versionencisa_csaf_otUS
EcoStruxure Process Expert: All versions (including former HDCS) prior to V2021alle Versionencisa_csaf_otUS
SCADAPack RemoteConnect for x70: All versions prior to R2.7.3alle Versionencisa_csaf_otUS
Schneider Electric Software, LLC EcoStruxure Control Expert< 15.1 HF001 (including former Unity Pro)cisa_csaf_otUS
Schneider Electric Software, LLC EcoStruxure Process Expert< 2021 (including former HDCS)cisa_csaf_otUS
Schneider Electric Software, LLC SCADAPack RemoteConnect for x70< R2.7.3cisa_csaf_otUS
n/a AT&T≤ AT&T Labs Xmill 0.7, Schneider Electric EcoStruxure Control Expert 15enisa_euvdEU
AT&T Labs Xmill≤ 0.7fstec_bduRU
Schneider Electric EcoStruxure Control Expert≤ 15.1 HF001fstec_bduRU
Schneider Electric EcoStruxure Process Expert≤ 2021fstec_bduRU
Schneider Electric SCADAPack RemoteConnect≤ R2.7.3fstec_bduRU
att xmill= 0.7nvdUScpe:2.3:a:att:xmill:*:*:*:*:*:*:*:*

Advisories (1)

Hersteller- und Ökosystem-Meldungen dazu.

ICSA-22-223-03Schneider Electric EcoStruxure, EcoStruxure Process Expert, SCADAPack RemoteConnect for x702022-08-11icsa · cisa_csaf_otUS
The successful exploitation of these vulnerabilities on the affected products could lead to the execution of malicious files, which could result in code execution with elevated privileges.

auch bekannt als (5)

Weitere Namen und Kennungen dieser Entität.

quellen

Welche Quellen diesen Datensatz belegen und wann.

cnnvd enisa_euvd fstec_bdu cisa_csaf_ot nvd NVD CVE.org MITRE

veröffentlicht 2021-08-20geändert 2026-06-17

verwandt (16,137)

Verwandte Einträge.

ID	Schweregrad	EPSS	ausnutzbar	veröffentlicht
CVE-2026-86950US	—OT kritisch	26.2% (98th)	KEV	2026-09-28
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 18.7.11 and iPadOS 18.7.11, iOS 26.7.1 and iPadOS 26.7.1, macOS Sequoia 15.8.1,…
CVE-2026-87491US	—OT kritisch	3.51% (89th)	KEV	2026-09-09
Out of bounds write in V8 in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security…
CVE-2026-53362US	—OT kritisch	0.71% (53rd)	KEV	2026-07-04
In the Linux kernel, the following vulnerability has been resolved: ipv6: account for fraggap on the paged allocation path In __ip6_append_data(), when the paged-allocation branc…
CVE-2026-53266US	—OT kritisch	0.93% (61st)	KEV	2026-06-25
In the Linux kernel, the following vulnerability has been resolved: netfilter: bridge: make ebt_snat ARP rewrite writable The ebtables SNAT target keeps the Ethernet source addre…
CVE-2026-11645US	—OT kritisch	2.44% (84th)	KEV	2026-06-09
Out of bounds read and write in V8 in Google Chrome prior to 149.0.7827.103 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium…

+16132 weitere

Referenzen (7)

Externe Belege — Patches, Meldungen, Analysen.

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