CVE-2026-41527 | KDE Kleopatra up to 26.7.x on Windows control flow

VDB-358755 · CVE-2026-41527 · GCVE-0-2026-41527 KDE KLEOPATRA UP TO 26.7.X ON WINDOWS CONTROL FLOW HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 5.6 $0-$5k 1.54+ Summaryinfo A vulnerability was found in KDE Kleopatra up to 26.7.x on Windows. It has been classified as problematic. Affected by this issue is some unknown functionality. Performing a manipulation results in control flow. This vulnerability is known as CVE-2026-41527. Attacking locally is a requirement. No exploit is available. Upgrading the affected component is recommended. Detailsinfo A vulnerability was found in KDE Kleopatra up to 26.7.x on Windows. It has been classified as problematic. This affects an unknown code block. The manipulation with an unknown input leads to a control flow vulnerability. CWE is classifying the issue as CWE-670. The code contains a control flow path that does not reflect the algorithm that the path is intended to implement, leading to incorrect behavior any time this path is navigated. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is: KDE Kleopatra before 26.08.0 on Windows allows local users to obtain the privileges of a Kleopatra user, because there is an error in the mechanism (KUniqueService) for ensuring that only one instance is running. It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-41527 since 04/20/2026. The exploitability is told to be difficult. Attacking locally is a requirement. The technical details are unknown and an exploit is not publicly available. Upgrading to version 26.08.0 eliminates this vulnerability. Productinfo Vendor KDE Name Kleopatra Version 26.0 26.1 26.2 26.3 26.4 26.5 26.6 26.7 License open-source Website Vendor: https://kde.org/ Product: https://github.com/KDE/kleopatra/ CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 5.7 VulDB Meta Temp Score: 5.6 VulDB Base Score: 4.5 VulDB Temp Score: 4.3 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 6.9 CNA Vector (MITRE): 🔒 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Control flow CWE: CWE-670 CAPEC: 🔒 ATT&CK: 🔒 Physical: Partially Local: Yes Remote: No Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: Kleopatra 26.08.0 Timelineinfo 04/20/2026 CVE reserved 04/22/2026 +2 days Advisory disclosed 04/22/2026 +0 days VulDB entry created 04/22/2026 +0 days VulDB entry last update Sourcesinfo Vendor: kde.org Product: github.com Advisory: github.com Status: Confirmed CVE: CVE-2026-41527 (🔒) GCVE (CVE): GCVE-0-2026-41527 GCVE (VulDB): GCVE-100-358755 Entryinfo Created: 04/22/2026 07:29 Changes: 04/22/2026 07:29 (63) Complete: 🔍 Cache ID: 99:310:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸