A vulnerability was found in Trusted Domain Project OpenDMARC up to 1.4.2. This vulnerability affects the function strcasecmp in the library libopendmarc/opendmarc_policy.c. The manipulation results in handling of exceptional conditions. The attack can be executed remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact Low

User Interaction None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact Low

User Interaction None

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact None

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

Exploitation poc

Automatable yes

Technical Impact partial

Affected Vendors & Products

Vendors Products
Trusted Domain Project
  • Opendmarc

No data.

No data.

References
Link Providers
https://nvd.nist.gov/vuln/detail/CVE-2026-101017 cve-icon
https://vuldb.com/cve/CVE-2026-101017 cve-icon cve-icon cve-icon
https://vuldb.com/submit/918247 cve-icon cve-icon cve-icon
https://vuldb.com/vuln/410887 cve-icon cve-icon cve-icon
https://vuldb.com/vuln/410887/cti cve-icon cve-icon cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-101017 cve-icon
https://xuyongzhe-vt.github.io/share/opendmarc-subdomain-walk-abort.html cve-icon cve-icon cve-icon
History

Mon, 28 Sep 2026 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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

Mon, 28 Sep 2026 12:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-476
References
Metrics threat_severity

None

 threat_severity

Moderate

Mon, 28 Sep 2026 09:15:00 +0000

Type Values Removed Values Added
Description A vulnerability was found in Trusted Domain Project OpenDMARC up to 1.4.2. This vulnerability affects the function strcasecmp in the library libopendmarc/opendmarc_policy.c. The manipulation results in handling of exceptional conditions. The attack can be executed remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
Title Trusted Domain Project OpenDMARC opendmarc_policy.c strcasecmp exceptional condition
First Time appeared Trusted Domain Project
Trusted Domain Project opendmarc
Weaknesses CWE-755
CPEs cpe:2.3:a:trusted_domain_project:opendmarc:*:*:*:*:*:*:*:*
Vendors & Products Trusted Domain Project
Trusted Domain Project opendmarc
References
Metrics cvssV2_0

{'score': 6.4, 'vector': 'AV:N/AC:L/Au:N/C:N/I:P/A:P/E:POC/RL:ND/RC:C'}

cvssV3_0

{'score': 6.5, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:P/RL:X/RC:C'}

cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:P/RL:X/RC:C'}

cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P'}
cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published: 2026-09-28T09:00:10.541Z

Updated: 2026-09-28T12:43:56.403Z

Reserved: 2026-09-27T11:33:10.549Z

Link: CVE-2026-101017

cve-icon Vulnrichment

Updated: 2026-09-28T12:43:52.246Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-28T09:17:05.503

Modified: 2026-09-28T15:15:33.930

Link: CVE-2026-101017

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-09-28T09:00:10Z

Links: CVE-2026-101017 - Bugzilla