CVE-2025-9998

Improper validation of packets sequencing

Published Sep 5, 2025 CVSS 4.0 · 6 Medium EPSS < 1% KEV · Not listed
Description
The sequence of packets received by a Networking server are not correctly checked.

An attacker could exploit this vulnerability to send specially crafted messages to force the application to stop.

Remediation

Vendor Solution

Harden the configuration Who should apply this recommendation: All users To reduce the risk of exploitation, ARC Informatique strongly recommends implementing the following defensive measures: * Minimize network exposure for all control system devices and/or systems, and ensure they are not accessible from unsecure networks. * Locate control system networks and remote devices behind firewalls and isolate them from business networks. * When remote access is required, use secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as its connected devices. Update PcVue Who should apply this recommendation: All users running affected components. Apply the patch by installing a fixed PcVue version. A fixed release must be installed on all stations for the fix to be fully applied. Existing projects require a settings update for the fix to be applied. The complete update procedure and verification steps are described in the Knowledge Base article KB1254 ( https://www.pcvue.com/?post_type=post&s=&kbase_id=kb1254 ) . For new projects, the settings are configured by default with secured values. To verify that the patch has been applied correctly, the user must check that: * The File version property of the file ./bin/sv32.exe matches the deployed release or later, and ensure that any earlier release is no longer used; * The Interoperability issues settings of the Networking feature are disabled. Available patches: Patch provided in: * PcVue 16.3.4 (16.3.4902.3112) * PcVue 15.2.13 (15.2.13902.37126) * PcVue 12.0.32 (12.0.32900.37130)

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-27014 The sequence of packets received by a Networking server are not correctly checked. An attacker could exploit this vulnerability to send specially crafted messages to force the application to stop.
References
History
Type Values Removed Values Added
CPEs cpe:2.3:a:arcinfo:pcvue:*:*:*:*:*:*:*:*
Type Values Removed Values Added
First Time appeared Arcinfo
Arcinfo pcvue
Vendors & Products Arcinfo
Arcinfo pcvue
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description The sequence of packets received by a Networking server are not correctly checked. An attacker could exploit this vulnerability to send specially crafted messages to force the application to stop.
Title Improper validation of packets sequencing
Weaknesses CWE-754
References
Metrics cvssV4_0

{'score': 6, 'vector': 'CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:U/RE:M/U:Green'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
arcinfo
Published
Updated
Feb 26, 2026, 7:54 AM
Reserved
Sep 4, 2025, 4:34 PM
Status
Deferred
Published
Sep 5, 2025, 5:15 PM
Modified
Jun 17, 2026, 10:10 AM