CVE-2026-1679 | zephyrproject-rtos Zephyr up to 4.3 Eswifi Socket Offload Driver buffer overflow (GHSA-qx3g-5g22-fq5w)

VDB-354070 · CVE-2026-1679 · GHSA-QX3G-5G22-FQ5W ZEPHYRPROJECT-RTOS ZEPHYR UP TO 4.3 ESWIFI SOCKET OFFLOAD DRIVER BUFFER OVERFLOW HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 6.2 $0-$5k 5.70- Summaryinfo A vulnerability labeled as critical has been found in zephyrproject-rtos Zephyr up to 4.3. This affects an unknown part of the component Eswifi Socket Offload Driver. Executing a manipulation can lead to buffer overflow. This vulnerability is registered as CVE-2026-1679. The attack needs to be launched locally. No exploit is available. The affected component should be upgraded. Detailsinfo A vulnerability classified as critical was found in zephyrproject-rtos Zephyr up to 4.3. This vulnerability affects an unknown part of the component Eswifi Socket Offload Driver. The manipulation with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes: The eswifi socket offload driver copies user-provided payloads into a fixed buffer without checking available space; oversized sends overflow `eswifi->buf`, corrupting kernel memory (CWE-120). Exploit requires local code that can call the socket send API; no remote attacker can reach it directly. The advisory is available at github.com. This vulnerability was named CVE-2026-1679 since 01/30/2026. The exploitation appears to be easy. Local access is required to approach this attack. The technical details are unknown and an exploit is not available. Upgrading eliminates this vulnerability. Productinfo Type Project Management Software Vendor zephyrproject-rtos Name Zephyr Version 4.0 4.1 4.2 4.3 License open-source Website Product: https://github.com/zephyrproject-rtos/zephyr/ CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 6.3 VulDB Meta Temp Score: 6.2 VulDB Base Score: 5.3 VulDB Temp Score: 5.1 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 7.3 CNA Vector (zephyr): 🔒 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: Buffer overflow CWE: CWE-120 / CWE-119 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: 🔒 Timelineinfo 01/30/2026 CVE reserved 03/28/2026 +57 days Advisory disclosed 03/28/2026 +0 days VulDB entry created 03/28/2026 +0 days VulDB entry last update Sourcesinfo Product: github.com Advisory: GHSA-qx3g-5g22-fq5w Status: Confirmed CVE: CVE-2026-1679 (🔒) GCVE (CVE): GCVE-0-2026-1679 GCVE (VulDB): GCVE-100-354070 Entryinfo Created: 03/28/2026 08:04 Changes: 03/28/2026 08:04 (65) Complete: 🔍 Cache ID: 99:066:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸