Secuno
ENNL
Book demo

CVE-2026-1679

Zephyrproject Zephyr buffer overflow

7.3 HIGHPublic exploitEPSS 0.21%
  1. Published27 Mar 2026

Description

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.

CVSS 3.1 breakdown

Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeUnchanged
ConfidentialityLow
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H

Affected products

Zephyrproject Zephyr≤ 4.3.0

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

CVE-2026-1089159.9
A vulnerability has been found in Edimax BR-6208AC 1.32. This affects an unknown part…
CVE-2026-1089149.9
A flaw has been found in Edimax BR-6208AC 1.32. Affected by this issue is some unknown…
CVE-2026-153409.8
lwIP SMTP client does not check the size of inputs, potentially allowing a buffer…
CVE-2026-195708.8
The LE Audio Broadcast Sink in subsys/bluetooth/audio/bap_broadcast_sink.c copies…
CVE-2026-842468.1
IBM Guardium Data Protection 12.0, 12.1, and 12.2 could allow a remote attacker to…
CVE-2026-841988.1
IBM Guardium Data Protection 12.0, 12.1, and 12.2 could allow a remote attacker to…

Frequently asked

Is CVE-2026-1679 being actively exploited?

CVE-2026-1679 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.21%.

How severe is CVE-2026-1679?

CVE-2026-1679 has a CVSS 3.1 base score of 7.3, rated high. EPSS estimates a 0.21% probability of exploitation.

Which products are affected by CVE-2026-1679?

Affected products include Zephyrproject Zephyr.

How do I fix CVE-2026-1679?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-1679 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation worksBook a demo

Get Patch this first every Monday

Five vulnerabilities that matter this week, ranked on real exploitation. Plain language, one email, no spam.

You can unsubscribe with one click from every issue. We handle your details as described in our privacy policy.

Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.