CVE-2026-101279Medium· 6.5▾ TwilightPoC availableA security vulnerability has been detected in Trusted Domain Project OpenDMARC up to 1.4.2. This impacts an unknown function of the file libopendmarc/opendmarc_policy.c of the component DMARC Parser. The manipulation of the argument pct …
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 35.8 · likelihood 0.1 · exploitation 12
A public proof-of-concept already exists for this vulnerability — see Exploit availability below.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Sep 29.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.3%
Exploit / PoC code exists
0.3% → 0.3%
A security vulnerability has been detected in Trusted Domain Project OpenDMARC up to 1.4.2. This impacts an unknown function of the file libopendmarc/opendmarc_policy.c of the component DMARC Parser. The manipulation of the argument pct leads to integer overflow. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-101280High· 7.3A vulnerability was detected in Trusted Domain Project OpenDMARC up to 1.4.2
CVE-2026-101281High· 7.3A flaw has been found in Trusted Domain Project OpenDMARC up to 1.4.2
CVE-2026-101278Medium· 4.3A weakness has been identified in Trusted Domain Project OpenDMARC up to 1.4.2
CVE-2026-100891High· 7.3A vulnerability has been found in Trusted Domain Project OpenDMARC up to 1.4.2
CVE-2026-100890Medium· 5.3A flaw has been found in Trusted Domain Project OpenDMARC up to 1.4.2
CVE-2026-100889High· 7.3A vulnerability was detected in Trusted Domain Project OpenDKIM up to 2.11.0