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TR7 ASP EUVDEUVD-2026-101019

| CVE-2026-16741 CRITICAL
OS Command Injection (CWE-78)
2026-10-14 TR-CERT GHSA-rr7g-59r8-56c5
9.8
CVSS 3.1 · Vendor: TR-CERT
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Reach exposed TR7 ASP appliance over network
  2. Delivery
    Send request with injected OS command
  3. Exploit
    Shell metacharacters bypass input neutralization
  4. Execution
    Execute arbitrary commands on appliance
  5. Impact
    Full compromise of confidentiality, integrity, availability

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization OS command sanitization, avoid shell exec
MITRE ATT&CK

2 techniques across 1 tactic: Execution

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Per the supplied CVSS vector (AV:N/AC:L/PR:N/UI:N), no special conditions are stated - remote unauthenticated OS command injection against TR7 ASP on both virtual and physical appliance deployments. The primary LIMITING factors are version and exposure: only TR7 ASP builds from 1.0.40.236 before 1.0.1554.2331 and from 1.6.42.239 before 1.6.1554.2331 are affected, and the appliance must be network-reachable by the attacker. The advisory does not identify the specific injectable feature, protocol, or configuration, so defenders should confirm which management or service interface carries the vulnerable input and restrict network access to it pending patching.

Impact

The CVSS 3.1 base score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) describes a textbook critical flaw: a remote, unauthenticated attacker can inject OS commands (CWE-78) over the network with low complexity and no user interaction, yielding full confidentiality, integrity, and availability impact. However, the corroborating exploitation signals are absent or unknown rather than confirming: no EPSS score was supplied, the CVE is NOT in CISA KEV, and no POC/exploit code is referenced - so there is no public exploit identified at time of analysis and no evidence of active exploitation. The only intelligence source is the Turkish national CERT advisory (TR-CERT / USOM), which raises confidence in the vulnerability's existence but provides no exploitation telemetry. Net assessment: the technical severity is genuinely critical for any exposed instance, but real-world urgency is tempered by the apparent obscurity and small deployment footprint of the TR7 ASP appliance - this reads as a high-severity, likely-low-prevalence issue rather than a mass-exploitation event. Note the limitation: the NVD-style description gives no details on which endpoint, parameter, or feature is injectable, so the AV:N/AC:L/PR:N rating cannot be independently corroborated against a specific attack surface and should be verified with the vendor.

Exploit ScenarioDerived

An attacker with network reachability to an internet- or LAN-exposed TR7 ASP virtual or physical appliance sends a crafted request to a vulnerable input field that is passed unsanitized into an OS command, injecting attacker-controlled shell commands. With no authentication or user interaction required, the attacker achieves command execution on the appliance and can read sensitive data, alter configuration, or disrupt service. No public proof-of-concept is referenced, so exploitation would currently require independent vulnerability research.

Act Now Prioritize within 24-48h. Why: CRITICAL severity.
Patch available 1.7% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 14, 2026

Remote unauthenticated OS command injection in TR7 ASP allows an attacker who can reach the appliance over the network to execute arbitrary operating system commands with the privileges of the vulnerable service, yielding full loss of confidentiality, integrity, and availability. Affected builds are TR7 ASP from 1.0.40.236 before 1.0.1554.2331 and from 1.6.42.239 before 1.6.1554.2331, covering both virtual-appliance and physical-appliance deployments. The flaw carries a CVSS 3.1 base score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) per the assessed vector, meaning no authentication, no user interaction, and low attack complexity; no public exploit code has been identified at time of analysis and the issue is not listed as confirmed actively exploited (CISA KEV). The primary limiting factors are version and network exposure: only the specified build ranges are affected and the appliance must be reachable by the attacker.

RemediationAI

Vendor-released patch: upgrade TR7 ASP to 1.0.1554.2331 for the 1.0.x lineage and to 1.6.1554.2331 for the 1.6.x lineage; these are the first builds outside the affected 'before' ranges and should be treated as the fixed versions. Confirm the installed build number on every virtual and physical appliance instance before and after upgrading, and consult the TR-CERT advisory at https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-1327 for any vendor-specific upgrade sequencing or hotfix instructions. Because the advisory does not name the specific injectable feature, protocol, or configuration, immediate compensating controls should center on exposure reduction: place the appliance's management and service interfaces behind strict network ACLs or a management VLAN so that only trusted administrative hosts can reach them, and block or restrict inbound access from untrusted networks and the internet. Trade-off: this can interrupt legitimate remote administration, API integrations, and remote-support workflows, so allow-list the specific administration and monitoring sources rather than simply dropping all traffic. Until the exact vulnerable endpoint is known, treat any unexpected shell activity, outbound connections, or new local accounts on the appliance as a potential indicator of compromise and review appliance and upstream firewall logs for anomalous command execution attempts; network isolation reduces but does not eliminate risk if an attacker already has an allowed path to the vulnerable interface.

Affected VersionsENISA

TR7 ASP 1.6.42.239 <1.6.1554.2331
TR7 ASP 1.0.40.236 <1.0.1554.2331

Affected Packages

euvd tr7_asp fix: 1.0.1554.2331, 1.6.1554.2331

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The root cause is CWE-78, improper neutralization of special elements used in an OS command (OS command injection), classified here under the broader OS command injection family. In practice this means a user-controllable input - likely a management-console field, API parameter, or service request handled by the TR7 ASP appliance - is passed to a shell or command-execution primitive without adequate sanitization, metacharacter escaping, or argument separation, so injected shell syntax is interpreted by the underlying operating system rather than treated as inert data. Because the affected asset is a security appliance delivered both as a virtual appliance and as a physical appliance (reflected in the CPE entries under tr7_cyber_defense_inc.:tr7_asp), a successful injection converts the defensive control point itself into an attacker-controlled host, which is significantly worse than a comparable flaw in a non-security workload. The assessed CVSS vector (AV:N/AC:L/PR:N/UI:N) indicates the vulnerable input channel is network-reachable and need not be authenticated, but the public advisory does not identify the specific injectable feature, protocol, port, or configuration, so the exact request surface cannot be confirmed from available data.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (TR-CERT) PRIMARY 9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
vuln.today AI 9.8 CRITICAL

Description and CWE-78 support unauthenticated network OS command injection with no user interaction, giving AV:N/AC:L/PR:N and full C/I/A compromise on the appliance.

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

Primary rating from Vendor (TR-CERT).

CVSS VectorVendor: TR-CERT

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

Lifecycle Timeline

2
Patch available
Oct 14, 2026 - 14:17 EUVD
CVE Published
Oct 14, 2026 - 12:42 nvd
CRITICAL 9.8

DescriptionCVE.org

Improper neutralization of special elements used in an OS command ('OS command injection') vulnerability in TR7 Cyber ​​Defense Inc. TR7 ASP on virtual appliance and TR7 Cyber ​​Defense Inc. TR7 ASP on physical appliance allows OS Command Injection.

This issue affects TR7 ASP: from 1.0.40.236 before 1.0.1554.2331; TR7 ASP: from 1.6.42.239 before 1.6.1554.2331.

Executive ViewAI

Why It Matters

TR7 ASP virtual and physical appliances in affected build ranges expose organizations to unauthenticated remote OS command injection, allowing a network-reachable attacker to gain full control of the appliance. Because the flaw requires no credentials or user interaction and carries a critical severity rating, leadership should treat any internet- or broadly reachable TR7 ASP instance as an urgent containment priority. No public exploit has been identified at time of analysis, but No vendor-released patch identified at time of analysis means exposure management and network isolation are the immediate levers.

Business Impact: Severe
Compensating Controls

No vendor-released patch identified at time of analysis; interim mitigations include removing internet exposure, restricting access to trusted management networks with firewall allowlists, segmenting affected TR7 ASP appliances from critical systems, disabling unnecessary management interfaces, monitoring for anomalous command execution or outbound traffic, and enforcing least privilege for the appliance service account where possible.

Threat Intelligence Overview

EPSS Score
1.7%
Top 23% exploitable
Prevalence
Rare
obscure Turkish niche vendor appliance, no broad enterprise footprint
Data Quality
5 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity CRITICAL
CISA KEV No
Public POC No
EPSS 1.7%
Patch available Yes
Active threat No
Deciding rule
CRITICAL severity
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
Yes
Human Impact
Very High
Technical Impact
Total

Priority Score

51
Low Medium High Critical
KEV: 0
EPSS: +2
CVSS: +49
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

OS command injection occurs when an application passes unsanitized user input directly into system shell commands.

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