Description
ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In versions 5.2.7, 5.3.5, 5.4.4, 5.5.4, and 6.0.1, an out-of-bounds read flaw exists in the DHCP server option parser (parse_options() in components/lwip/apps/dhcpserver/dhcpserver.c) shipped with ESP-IDF's lwIP component. The parser walks the BOOTP/DHCP options field without validating that each option's length byte and declared payload length stay within the received packet buffer. A crafted DHCP request can cause the parser to read past the end of the options buffer into adjacent heap memory. The issue affects the DHCP server used by ESP-IDF's SoftAP and any configuration where the device runs as a DHCP server on a local network. This issue has been patched in versions 5.2.8, 5.3.6, 5.4.5, 5.5.5, and 6.0.2.
Published: 2026-06-10
Score: 6.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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History

Thu, 11 Jun 2026 18:30:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:espressif:esp-idf:5.2.7:*:*:*:*:*:*:*
cpe:2.3:a:espressif:esp-idf:5.3.5:*:*:*:*:*:*:*
cpe:2.3:a:espressif:esp-idf:5.4.4:*:*:*:*:*:*:*
cpe:2.3:a:espressif:esp-idf:5.5.4:*:*:*:*:*:*:*
cpe:2.3:a:espressif:esp-idf:6.0.1:*:*:*:*:*:*:*

Wed, 10 Jun 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 10 Jun 2026 03:00:00 +0000

Type Values Removed Values Added
First Time appeared Espressif
Espressif esp-idf
Vendors & Products Espressif
Espressif esp-idf

Wed, 10 Jun 2026 01:30:00 +0000

Type Values Removed Values Added
Description ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In versions 5.2.7, 5.3.5, 5.4.4, 5.5.4, and 6.0.1, an out-of-bounds read flaw exists in the DHCP server option parser (parse_options() in components/lwip/apps/dhcpserver/dhcpserver.c) shipped with ESP-IDF's lwIP component. The parser walks the BOOTP/DHCP options field without validating that each option's length byte and declared payload length stay within the received packet buffer. A crafted DHCP request can cause the parser to read past the end of the options buffer into adjacent heap memory. The issue affects the DHCP server used by ESP-IDF's SoftAP and any configuration where the device runs as a DHCP server on a local network. This issue has been patched in versions 5.2.8, 5.3.6, 5.4.5, 5.5.5, and 6.0.2.
Title ESF-IDF: Out-of-bounds Read in lwIP DHCP Server Option Parser
Weaknesses CWE-125
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}


Subscriptions

Espressif Esp-idf
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-06-10T15:10:05.993Z

Reserved: 2026-05-08T20:44:38.965Z

Link: CVE-2026-45160

cve-icon Vulnrichment

Updated: 2026-06-10T15:09:58.980Z

cve-icon NVD

Status : Analyzed

Published: 2026-06-10T02:16:32.520

Modified: 2026-06-11T18:22:05.747

Link: CVE-2026-45160

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-10T02:45:15Z

Weaknesses