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seacms EUVDEUVD-2026-71768

| CVE-2026-79423 HIGH
OS Command Injection (CWE-78)
2026-09-04 mitre GHSA-8w4v-9rj9-5qqm
8.8
CVSS 3.1 · Vendor: mitre
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Severity by source

Vendor (mitre) PRIMARY
8.8 HIGH
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
vuln.today AI
7.2 HIGH

admin_config.php is an administrative configuration endpoint, implying administrator-level credentials (PR:H); all other metrics follow from network-accessible PHP RCE with full impact.

3.1 AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (mitre).

CVSS VectorVendor: mitre

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

5
Metadata Corrected
Sep 08, 2026 - 15:40 vuln.today
tag: N A removed
Analysis Generated
Sep 08, 2026 - 15:33 vuln.today
CVSS changed
Sep 08, 2026 - 15:22 NVD
8.8 (HIGH)
CVE Published
Sep 04, 2026 - 00:00 cve.org
UNKNOWN (no severity yet)
CVE Published
Sep 04, 2026 - 00:00 cve.org
HIGH 8.8

DescriptionCVE.org

An authenticated remote code execution (RCE) vulnerability in the admin_config.php component of seacms v13.6 allows attackers to execute arbitrary code via a crafted POST request.

AnalysisAI

Authenticated remote code execution in seacms v13.6 allows a low-privileged attacker to execute arbitrary OS commands by sending a crafted POST request to the admin_config.php component, exploiting a CWE-78 OS command injection flaw. The vulnerability achieves full system compromise (C:H/I:H/A:H) over the network with no user interaction required beyond authentication. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Persist
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Impact
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Vulnerability AssessmentAI

Exploitation Authentication is required: the CVSS vector specifies PR:L, indicating at minimum a low-privileged authenticated account. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The provided CVSS 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) assigns PR:L, implying only a low-privileged account is needed. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation No vendor-released patch has been identified at time of analysis - the references point only to the upstream GitHub repository and the researcher advisory, with no tagged release or commit fixing the issue. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, inventory all seacms v13.6 installations and immediately restrict network and application-layer access to the admin_config.php component to authorized administrative systems only; disable unnecessary low-privileged user accounts. …

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EUVD-2026-71768 vulnerability details – vuln.today

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