CVE-2026-26459

Out-of-Bounds Option Parsing Resulting in Segmentation Fault in ccoap

Published Aug 27, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Description
ccoap 77f55c4b466e99327c24ace8a2913d3ba7e2ccd5 contains a vulnerability in the option parsing logic that causes a segmentation fault when processing malformed COAP messages with insufficient option data.

Remediation

No solution or workaround provided in the CVE record

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Advisories

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History
Type Values Removed Values Added
Title Out-of-Bounds Option Parsing Resulting in Segmentation Fault in ccoap
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Segmentation fault in ccoap option parsing causes denial of service
Weaknesses CWE-119
CWE-20
Type Values Removed Values Added
Weaknesses CWE-787
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

Type Values Removed Values Added
Title Segmentation fault in ccoap option parsing causes denial of service
Weaknesses CWE-119
CWE-20
Type Values Removed Values Added
Description ccoap 77f55c4b466e99327c24ace8a2913d3ba7e2ccd5 contains a vulnerability in the option parsing logic that causes a segmentation fault when processing malformed COAP messages with insufficient option data.
References

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Weaknesses

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Status
PUBLISHED
Assigner
mitre
Published
Updated
Sep 1, 2026, 7:05 PM
Reserved
Feb 16, 2026, 12:00 AM
Status
Deferred
Published
Aug 27, 2026, 5:17 PM
Modified
Sep 1, 2026, 7:17 PM