CVE-2025-9999

Adjacent command execution via unchecked networking payloads

Published Sep 5, 2025 · Updated Feb 26, 2026

Improper input validation in ARC Informatique PcVue Networking allows adjacent attackers to execute unauthorized application commands. The receiving station accepts inconsistent or unauthenticated payload elements from interstation messages without the checks needed before command dispatch. An attacker must reach the adjacent TCP client/server network and overcome high attack complexity; successful exploitation reads and alters data through application commands without interrupting service.

CVSS severity7.6
High
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in ARC Informatique PcVue Networking allows adjacent attackers to execute unauthorized application commands. The receiving station accepts inconsistent or unauthenticated payload elements from interstation messages without the checks needed before command dispatch. An attacker must reach the adjacent TCP client/server network and overcome high attack complexity; successful exploitation reads and alters data through application commands without interrupting service.

The record

CVE
CVE-2025-9999
Published
Sep 5, 2025
Updated
Feb 26, 2026
Vendor
ARC Informatique
Product
PcVue
Classifications
CWE-1288, CWE-940, T0866
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 5, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=12.0.0 <=12.0.31
  2. Affected versionversion=15.0.0 <=15.2.12
  3. Affected versionversion=16.0.0 <=16.3.3

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

ARC Informatique · PcVueversion=12.0.0 <=12.0.31; version=15.0.0 <=15.2.12; version=16.0.0 <=16.3.3

Published CVSS scores

7.6ARC InformatiqueCVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N/AU:Y/R:U/RE:M/U:Green

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1288Improper Validation of Consistency within Input
CWE-940Improper Verification of Source of a Communication Channel
T0866Exploitation of Remote Services

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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