CVE-2026-101015

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.29% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 21.7% of scored records. A rank, not a probability.

NVD base score

5.5 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Awaiting Analysis. NVD last modified this record on 2026-10-01.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-09-28 08:30Z1 MO AGO

Last updated

2026-10-01 14:10Z28 DAYS AGO

Reserved

2026-09-27

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Medium (CVSS 6.9)

CNA CVSS vector

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

Weaknesses

• CWE-20Improper Input ValidationClass
• CWE-1289Improper Validation of Unsafe Equivalence in InputBase

Data version

5.2

Document digest

6a0a2bc809d10fbb564ecd45c1b330e9f910362388fa76b60481c7078d65835f

• vuldb.comVDB-410885 | Trusted Domain Project OpenDMARC policy.c improper validation of unsafe equivalence in inputhttps://vuldb.com/vuln/410885vdb-entry
• vuldb.comVDB-410885 | CTI Indicators (IOB, IOC, IOA)https://vuldb.com/vuln/410885/ctisignaturepermissions-required
• vuldb.comCVE-2026-101015 | CVE Analysis and Reporthttps://vuldb.com/cve/CVE-2026-101015third-party-advisory
• vuldb.comSubmit #917216 | The Trusted Domain Project OpenDMARC 1.4.2 Improper Authenticationhttps://vuldb.com/submit/917216third-party-advisory
• weitongli.comhttps://weitongli.com/share/opendmarc-unicode-dot-bypass.htmlexploit