Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessObtain local standard-user account
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DeliverySupply crafted argument-delimiter input to Pardus Pen
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ExploitInject extra arguments into underlying command invocation
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ExecutionAlter command execution behavior
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ImpactAchieve limited integrity impact on affected system
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Argument sanitization
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| Exploitation Conditions | Exploitation requires an interactive local session with at least low-privilege (standard user) account access on a system running Pardus Pen before 4.2.1. The attacker must be able to provide crafted input to the application's command-construction path. The CVSS AV:L metric confirms strictly local exploitation with no network-accessible vector. No specific non-default configuration is described as a prerequisite; however, exploitation is inherently limited to environments where Pardus Pen is installed, which is specific to the Pardus Linux ecosystem, predominantly deployed in Turkish government and educational institutions. |
| Impact | The CVSS 3.1 base score of 3.3 (AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N) accurately captures a genuinely low-severity issue. Exploitation is bounded to an authenticated local session with standard user privileges, sharply constraining the attacker population to users who already have shell access on the target system. The integrity impact is rated Low, consistent with argument injection that can redirect or augment command behavior without delivering arbitrary code execution based on the available data-there is no scope change and no confidentiality or availability impact. No EPSS score is supplied in the input; KEV status is absent, confirming no known active exploitation. SSVC signals: exploitation = none, automatable = no (local access prerequisite), technical impact = partial. This is a real but low-priority vulnerability, most relevant to Pardus Linux deployments in multi-user or shared environments where user privilege separation is security-sensitive. |
| Exploit ScenarioDerived | A local user with a standard (low-privilege) account on a Pardus Linux system running Pardus Pen before 4.2.1 crafts input containing unescaped argument delimiters-such as embedded spaces or special characters-that are passed unsanitized to an underlying command invocation within the application. The injected arguments modify the command's behavior, allowing limited unauthorized alteration of data or program state beyond what the application intended. No public exploit code has been identified at time of analysis. |
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Alert meAnalysisAIv1 – Sep 11, 2026
Argument injection in Pardus Pen before version 4.2.1 allows a local, low-privileged user to inject unsanitized argument delimiters into an underlying command invocation, yielding limited integrity impact. The flaw (CWE-88) is strictly local in scope-CVSS AV:L/PR:L-and carries no confidentiality or availability consequence per the published vector. No public exploit code and no active exploitation have been identified; vendor-released patch 4.2.1 is available via the TR-CERT advisory.
RemediationAI
Upgrade to Pardus Pen 4.2.1 or later, which resolves the argument injection flaw per the TR-CERT advisory at https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-1079. As a compensating control prior to patching, restrict interactive access to the system and limit the set of local user accounts permitted to invoke Pardus Pen to the minimum necessary; note this does not eliminate the vulnerability but reduces the attacker population in multi-user environments.
Affected VersionsENISA
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in euvd
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Technical ContextAI · show details
CWE-88 (Argument Injection or Modification) arises when application-supplied input containing argument delimiters-such as spaces, quotes, or null bytes-is passed to an OS command without sanitization, enabling an attacker to inject additional flags or positional arguments beyond those intended by the application. Pardus Pen (CPE: cpe:2.3:a:tubitak_bilgem_software_technologies_research_institute:pardus_pen) is a pen/stylus input utility developed by TUBITAK BILGEM Software Technologies Research Institute for the Pardus Linux distribution, Turkey's nationally maintained open-source OS. The vulnerability is located in the argument-handling path of a command the application constructs at runtime.
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Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Local attack vector with low-privilege user required; only limited integrity impact from argument manipulation; no confidentiality or availability consequence.
Primary rating from Vendor (TR-CERT).
CVSS VectorNVD
Lifecycle Timeline
1DescriptionNVD
Improper neutralization of argument delimiters in a command ('argument injection') vulnerability in TUBITAK BILGEM Software Technologies Research Institute Pardus Pen allows Argument Injection.
This issue affects Pardus Pen: before 4.2.1.
Threat Intelligence Overview
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.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Code injection occurs when an application accepts user input and passes it directly into a language interpreter or evaluator without proper sanitization.
EUVD-2026-76102
GHSA-8jgw-pvr8-c8v3
NVD
CVE.org
EPSS
Vulnrichment
Exploit-DB