CVE-2026-25835 | mbed TLS up to 3.6.5 entropy

VDB-354753 · CVE-2026-25835 · EUVD-2026-17999 MBED TLS UP TO 3.6.5 ENTROPY HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 3.6 $0-$5k 2.19 Summaryinfo A vulnerability was found in mbed TLS up to 3.6.5. It has been rated as problematic. This vulnerability affects unknown code. Performing a manipulation results in entropy. This vulnerability was named CVE-2026-25835. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is advised. Detailsinfo A vulnerability classified as problematic has been found in mbed TLS up to 3.6.5. This affects an unknown function. The manipulation with an unknown input leads to a entropy vulnerability. CWE is classifying the issue as CWE-332. The lack of entropy available for, or used by, a Pseudo-Random Number Generator (PRNG) can be a stability and security threat. This is going to have an impact on confidentiality. The summary by CVE is: Mbed TLS before 3.6.6 and TF-PSA-Crypto before 1.1.0 misuse seeds in a Pseudo-Random Number Generator (PRNG). The advisory is shared at mbed-tls.readthedocs.io. This vulnerability is uniquely identified as CVE-2026-25835 since 02/06/2026. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1600.001 for this issue. Upgrading to version 3.6.6 eliminates this vulnerability. The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-17999). Productinfo Name mbed TLS Version 3.6.0 3.6.1 3.6.2 3.6.3 3.6.4 3.6.5 CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 3.7 VulDB Meta Temp Score: 3.6 VulDB Base Score: 3.7 VulDB Temp Score: 3.6 VulDB Vector: 🔒 VulDB Reliability: 🔍 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: Entropy CWE: CWE-332 / CWE-331 / CWE-330 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes 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: mbed TLS 3.6.6 Timelineinfo 02/06/2026 CVE reserved 04/01/2026 +53 days Advisory disclosed 04/01/2026 +0 days VulDB entry created 04/02/2026 +0 days VulDB entry last update Sourcesinfo Advisory: mbed-tls.readthedocs.io Status: Confirmed CVE: CVE-2026-25835 (🔒) GCVE (CVE): GCVE-0-2026-25835 GCVE (VulDB): GCVE-100-354753 EUVD: 🔒 Entryinfo Created: 04/01/2026 20:55 Updated: 04/02/2026 01:37 Changes: 04/01/2026 20:55 (53), 04/02/2026 01:37 (1) Complete: 🔍 Cache ID: 99:5CC:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸