CVE-2026-10703

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.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• 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

0.24% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 15.7% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/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

Deferred. NVD last modified this record on 2026-07-22.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

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

2026-06-03 00:30Z3 MO AGO

Last updated

2026-06-03 12:41Z3 MO AGO

Reserved

2026-06-02

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Medium (CVSS 5.3)

CNA CVSS vector

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

Weaknesses

• CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferClass
• CWE-416Use After FreeVariant

Data version

5.2

Document digest

36de725b963ce3548fd4edc6ae1529c9d3a80f686eba14c73a5f05aca2d2526e

• vuldb.comVDB-368016 | EIPStackGroup OpENer SendRRData cipmessagerouter.c CreateMessageRouterRequestStructure use after freehttps://vuldb.com/vuln/368016vdb-entrytechnical-description
• vuldb.comVDB-368016 | CTI Indicators (IOB, IOC, IOA)https://vuldb.com/vuln/368016/ctisignaturepermissions-required
• vuldb.comCVE-2026-10703 | CVE Analysis and Reporthttps://vuldb.com/cve/CVE-2026-10703third-party-advisory
• vuldb.comSubmit #830921 | Linux OpENer (Open EtherNet/IP Stack) lastet Use After Freehttps://vuldb.com/submit/830921third-party-advisory
• github.comhttps://github.com/EIPStackGroup/OpENer/issues/566issue-tracking
• github.comhttps://github.com/user-attachments/files/27100961/poc.zipexploit
• github.comhttps://github.com/EIPStackGroup/OpENer/product