CVE-2026-101014CWE-193

CVE-2026-101014

High · published September 28, 2026

CVSS v3.1
7.3
EPSS
0%
Percentile
23.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.3 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CVSS v4.0
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
EPSS
0.00314 · 23.1th percentile
Weakness
CWE-193 · Off-by-one Error
Published
2026-09-28T13:17Z
References (8)
https://github.com/trusteddomainproject/OpenDMARC/commit/b3b1da9264bc80324094a27c71e7369bdedc62ae · [email protected]https://github.com/trusteddomainproject/OpenDMARC/pull/188 · [email protected]https://github.com/trusteddomainproject/OpenDMARC/pull/344 · [email protected]https://vuldb.com/cve/CVE-2026-101014 · [email protected]https://vuldb.com/submit/917100 · [email protected]https://vuldb.com/vuln/410884 · [email protected]https://vuldb.com/vuln/410884/cti · [email protected]https://weitongli.com/share/opendmarc-cleanup-off-by-one.html · [email protected]
EPSS history
Timeline
  • 29 SEP 03:24Z
    EPSS moved — → 0%
    epss
  • 28 SEP 08:15Z
    Trusted Domain Project OpenDMARC DMARC Record opendmarc_util.c opendmarc_util_cleanup off-by-one
    cvelistv5