CVE-2026-6499

Local binary replacement via incorrect permissions

Published May 4, 2026 · Updated May 4, 2026

Incorrect permissions in ILM Informatique OpenConcerto 1.7.5 allow local users to replace application binaries. The CNA identifies critical-resource permissions as the weakness but does not disclose the affected files, installer action, permission values, or platforms. Exploitation requires low local privileges and passive user interaction; execution of a substituted binary can affect the later user's confidentiality and integrity.

CVSS severity2.4
Low
EPSS probability0.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect permissions in ILM Informatique OpenConcerto 1.7.5 allow local users to replace application binaries. The CNA identifies critical-resource permissions as the weakness but does not disclose the affected files, installer action, permission values, or platforms. Exploitation requires low local privileges and passive user interaction; execution of a substituted binary can affect the later user's confidentiality and integrity.

The record

CVE
CVE-2026-6499
Published
May 4, 2026
Updated
May 4, 2026
Vendor
ILM Informatique
Product
OpenConcerto
Classifications
CWE-732, CAPEC-642, T1554
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 4, 2026CVE publishedPublication date reported by the CVE source.
  2. May 4, 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=1.7.5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

ILM Informatique · OpenConcertoversion=1.7.5

Published CVSS scores

2.4TCS-CERTCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-732Incorrect Permission Assignment for Critical Resource
CAPEC-642Replace Binaries
T1554Compromise Client Software Binary

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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