A CWE-611: Improper Restriction of XML External Entity Reference vulnerability exists that could cause unauthorized read access to the file…

published 2023-05-16 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-33678

cvss: 5.0; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 6%
public exploits: 0; none known

A CWE-611: Improper Restriction of XML External Entity Reference vulnerability exists that could cause unauthorized read access to the file system when a malicious configuration file is loaded on to the software by a local user.

Patch / fix

fixed in 1

schneider-electric opc_factory_server 3.63

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 21 mo ago (2025-01-22)

Exploit prediction

0.17% chance of exploitation in the next 30 days, higher than 6% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	5.0	CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
NVD	3.1	5.5	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected products

Schneider Electric OPC Factory Server (OFS)

Classification

Weakness

CWE-611 Improper Restriction of XML External Entity Reference

References

download.schneider-electric.com /files?p_Doc_Ref=SEVD-2023-129-01&p_enDocType=Security+and+Safety+Notice&p_File_Name=SEVD-2023-129-01.pdf
vendor-advisory

Sources

CVE List CVE-2023-2161
NVD CVE-2023-2161

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Summary