CVE-2026-33987 | FreeRDP up to 3.24.1 persistent.c persistent_cache_read_entry_v3 heap-based overflow

VDB-354279 · CVE-2026-33987 · EUVD-2026-17235 FREERDP UP TO 3.24.1 PERSISTENT.C PERSISTENT_CACHE_READ_ENTRY_V3 HEAP-BASED OVERFLOW HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 6.1 $0-$5k 3.40 Summaryinfo A vulnerability identified as critical has been detected in FreeRDP up to 3.24.1. This affects the function persistent_cache_read_entry_v3 of the file libfreerdp/cache/persistent.c. Performing a manipulation results in heap-based overflow. This vulnerability is cataloged as CVE-2026-33987. The attack must be initiated from a local position. There is no exploit available. You should upgrade the affected component. Detailsinfo A vulnerability, which was classified as critical, was found in FreeRDP up to 3.24.1. This affects the function persistent_cache_read_entry_v3 of the file libfreerdp/cache/persistent.c. The manipulation with an unknown input leads to a heap-based overflow vulnerability. CWE is classifying the issue as CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is: FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, in persistent_cache_read_entry_v3() in libfreerdp/cache/persistent.c, persistent->bmpSize is updated before winpr_aligned_recalloc(). If realloc fails, bmpSize is inflated while bmpData points to the old buffer. This issue has been patched in version 3.24.2. It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-33987 since 03/24/2026. The exploitability is told to be easy. Attacking locally is a requirement. Technical details of the vulnerability are known, but there is no available exploit. Upgrading to version 3.24.2 eliminates this vulnerability. The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-17235). Productinfo Type Remote Access Software Name FreeRDP Version 3.24.0 3.24.1 License open-source Website Product: https://github.com/FreeRDP/FreeRDP/ CPE 2.3info 🔒 🔒 CPE 2.2info 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 6.2 VulDB Meta Temp Score: 6.1 VulDB Base Score: 5.3 VulDB Temp Score: 5.1 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 7.1 CNA Vector (GitHub_M): 🔒 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: Heap-based overflow CWE: CWE-122 / CWE-119 CAPEC: 🔒 ATT&CK: 🔒 Physical: Partially Local: Yes Remote: Partially 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: FreeRDP 3.24.2 Timelineinfo 03/24/2026 CVE reserved 03/30/2026 +6 days VulDB entry created 03/31/2026 +0 days Advisory disclosed 03/31/2026 +0 days VulDB entry last update Sourcesinfo Product: github.com Advisory: github.com Status: Confirmed CVE: CVE-2026-33987 (🔒) GCVE (CVE): GCVE-0-2026-33987 GCVE (VulDB): GCVE-100-354279 EUVD: 🔒 Entryinfo Created: 03/31/2026 00:21 Updated: 03/31/2026 02:30 Changes: 03/31/2026 00:21 (65), 03/31/2026 02:30 (1) Complete: 🔍 Cache ID: 99:2AE:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸