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VULNERABILITIES

CVE-2026-87121 Details

Description

lwIP TCP/IP Stack MQTT is vulnerable to an out-of-bounds write, which may allow an attacker to gain full code execution on the device.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:9.8 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-265-01.json [email protected]
https://savannah.nongnu.org/projects/lwip [email protected]
https://www.cisa.gov/news-events/ics-advisories/icsa-26-265-01 [email protected]

Weakness Enumeration

CWE-IDCWE NameSource
CWE-787Out-of-bounds Write[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-87121
NVD Published Date:
Sep 22, 2026
NVD Last Modified:
Sep 23, 2026
Source:
[email protected]
CVE-2026-87121 Details - Not Deferred