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Pardus Software Center EUVDEUVD-2026-26235

| CVE-2026-5141 HIGH
Improper Privilege Management (CWE-269)
2026-04-29 TR-CERT
8.8
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
    Lure user to trigger Software Center action
  2. Delivery
    Abuse improper privilege management
  3. Exploit
    Hijack privileged helper process
  4. Execution
    Execute operations with elevated rights
  5. Impact
    Full system compromise (C/I/A)

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V8 - Authorization Least privilege enforcement
MITRE ATT&CK

1 technique across 1 tactic: Privilege Escalation

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

Exploitation Conditions

Exploitation requires a user to interact with or trigger the Pardus Software Center (CVSS UI:R), and the target must be running Pardus Software Center before version 1.0.3. The attack abuses the application's privileged process/helper via improper privilege management, so the limiting factor is the need for that user action and the presence of the vulnerable Software Center component; per CVSS the attacker needs no prior authentication (PR:N). Note the tension in the data: the vector claims a network attack vector (AV:N) while the flaw is described as hijacking a local privileged process - verify with the vendor whether remote triggering is actually possible or whether local user context is required.

Impact

The signals are partially conflicting and should be weighed carefully. The vendor-scored CVSS 3.1 base of 8.8 (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) implies a high-severity, network-reachable, unauthenticated attack requiring only user interaction - yet the vulnerability class (local privilege management of a desktop software-center process) and the 'Hijacking a privileged process' description read more like local privilege escalation than a remote network attack, so the AV:N rating should be verified with the vendor. Countervailing signals point to low real-world urgency: EPSS is 0.04% (11th percentile), CISA SSVC rates Exploitation as 'none' and Automatable as 'no', and no public POC is identified. The one aligned high-risk signal is SSVC Technical Impact 'total,' matching the C:H/I:H/A:H claim. Net assessment: patch as routine hygiene rather than emergency - high theoretical impact but no evidence of exploitation, low automatability, and a plausible mismatch between the network attack vector and the local-privilege-escalation nature of the flaw.

Exploit ScenarioDerived

An attacker lures a logged-in Pardus user into performing a crafted action within (or targeting) the Software Center, causing the application's privileged helper process to be hijacked and to execute attacker-controlled operations with elevated rights. Because the CVSS vector requires user interaction (UI:R) and low complexity (AC:L), a socially engineered install prompt or a manipulated software-center request could suffice; no public POC is identified at time of analysis.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Jul 24, 2026

Privilege escalation in TUBITAK BILGEM's Pardus Software Center before 1.0.3 allows an attacker to hijack a privileged process, enabling full compromise of confidentiality, integrity, and availability on affected Pardus Linux systems. The flaw stems from improper privilege management (CWE-269) and requires user interaction to trigger, but no prior authentication per the CVSS vector. There is no public exploit identified at time of analysis and EPSS exploitation probability is very low (0.04%), consistent with CISA SSVC scoring exploitation as 'none'.

RemediationAI

Upgrade Pardus Software Center to version 1.0.3 or later, which the vendor lists as the fixed release (Patch available per vendor advisory; the input specifies fixed version 1.0.3 as the first unaffected release). Apply the update through Pardus's standard package channels and consult the TR-CERT/USOM advisory at https://www.usom.gov.tr/bildirim/tr-26-0131 (also mirrored at https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-0131) for distribution-specific instructions. Until 1.0.3 is deployed, reduce exposure by restricting who can launch or interact with the Software Center on multi-user systems and by avoiding running it in untrusted sessions, since exploitation requires user interaction to trigger the privileged process; note the trade-off that limiting access to the Software Center also limits legitimate self-service software installation for standard users.

Affected VersionsENISA

Pardus Software Center 0 <1.0.3

Affected Packages

euvd pardus_software_center fix: 1.0.3

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

Pardus Software Center is the graphical application-management/software-installation front-end shipped with Pardus, a Debian-based Linux distribution developed by TUBITAK BILGEM (Türkiye's national scientific research institute). Software centers of this type routinely broker privileged operations (package install/removal, repository configuration) through a helper process or policy mechanism that runs with elevated rights. The root cause here belongs to CWE-269 (Improper Privilege Management), and the EUVD/NVD classification also cites Improper Access Control and Incorrect Privilege Assignment - indicating that the privileged backend process does not correctly enforce which caller or operation is authorized, allowing a lower-privileged user action to 'hijack' that privileged process. The single CPE, cpe:2.3:a:tubitak_bilgem_software_technologies_research_institute:pardus_software_center:*, confirms the application itself (not the underlying OS) as the vulnerable component.

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Severity by source

Vendor (TR-CERT) PRIMARY 8.8 HIGH
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
vuln.today AI 7.3 HIGH

Hijacking a local privileged desktop process implies local vector and an authenticated local user (AV:L, PR:L, UI:R); impact is total, so C/I/A:H.

3.1 AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
4.0 AV:L/AC:L/AT:N/PR:L/UI:P/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
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

3
Patch released
Apr 29, 2026 - 21:13 nvd
Patch available
Patch available
Apr 29, 2026 - 16:01 EUVD
CVE Published
Apr 29, 2026 - 14:18 nvd
HIGH 8.8

DescriptionCVE.org

Improper Privilege Management, Improper Access Control, Incorrect privilege assignment vulnerability in TUBITAK BILGEM Software Technologies Research Institute Pardus Software Center allows Hijacking a privileged process.

This issue affects Pardus Software Center: before 1.0.3.

Executive ViewAI

Why It Matters

Pardus Software Center before version 1.0.3 contains a privilege escalation vulnerability (CVE-2026-5141) allowing unprivileged local users to gain complete system control on affected Pardus Linux systems. Although no public exploit exists and exploitation risk is currently low per CISA metrics, the flaw permits full compromise of system confidentiality, integrity, and availability.

Business Impact: High
Compensating Controls

Apply vendor patch.

Threat Intelligence Overview

EPSS Score
0.0%
Top 89% exploitable
Prevalence
Low
software center for niche national Linux distribution (Pardus), limited global 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 HIGH
CISA KEV No
Public POC No
EPSS 0.0%
Patch available Yes
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
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
No
Human Impact
High
Technical Impact
Total

Priority Score

44
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +44
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Privilege escalation occurs when an attacker leverages flaws in access control mechanisms to gain permissions beyond what they were originally granted.

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