---
cve: "CVE-2026-101014"
severity: "MEDIUM"
cvss: 6.9
epss: "0.3%"
vendor: "Trusted Domain Project"
kev: false
exploited: false
published: "2026-09-28 09:17:03"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-10-05T03:42:19+02:00"
---

# CVE-2026-101014

> 6.9 MEDIUM · 🧪 PoC

## Beschreibung

A vulnerability was detected in Trusted Domain Project OpenDMARC up to 1.4.2. Affected by this vulnerability is the function opendmarc_util_cleanup in the library libopendmarc/opendmarc_util.c of the component DMARC Record Parser. Performing a manipulation results in off-by-one. The attack may be initiated remotely. The exploit is now public and may be used. The patch is named b3b1da9264bc80324094a27c71e7369bdedc62ae. To fix this issue, it is recommended to deploy a patch.

## CNA-Record (Kanon, cvelistV5)

- CNA: **VulDB**
- State: PUBLISHED
- Stand: 2026-09-28 12:43:21
- CNA-CVSS: **6.9** (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P`)

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **poc**
  - Automatable: **yes**
  - Technical Impact: **partial**

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- b3b1da9264bc80324094a27c71e7369bdedc62ae (Commit)

## Referenzen

- <https://vuldb.com/vuln/410884>
- <https://vuldb.com/vuln/410884/cti>
- <https://vuldb.com/cve/CVE-2026-101014>
- <https://vuldb.com/submit/917100>
- <https://github.com/trusteddomainproject/OpenDMARC/pull/188>
- <https://github.com/trusteddomainproject/OpenDMARC/pull/344>
- <https://weitongli.com/share/opendmarc-cleanup-off-by-one.html>
- <https://github.com/trusteddomainproject/OpenDMARC/commit/b3b1da9264bc80324094a27c71e7369bdedc62ae>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-101014) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_