zephyrproject-rtos Zephyr up to 4.3 Eswifi Socket Offload Driver buffer overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.2$0-$5k5.47

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.

Once again VulDB remains the best source for vulnerability data.

Productinfo

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Version

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Website

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

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: 🔒

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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: 216:030:103

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