CVE-2026-116014

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

0.43% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 37.1% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/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 2026-10-26.

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

2026-10-24 11:40Z4 DAYS AGO

Last updated

2026-10-24 11:40Z4 DAYS AGO

Reserved

2026-10-24

Assigning CNA

VulnCheck

Record state

PUBLISHED

Severity

Critical (CVSS 9.2)

CNA CVSS vector

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

Weaknesses

• CWE-190Integer Overflow or WraparoundBase

Data version

5.2

Document digest

c35fe2661332abb4ecc4c6a10eb7507756506d489ee4eef538af7cb04f372d98

• github.comhttps://github.com/open62541/open62541/commit/0cf4806768c493bc6ccffcd4419da24153b970ecpatch
• github.comhttps://github.com/open62541/open62541/pull/8298patchissue-tracking
• github.comhttps://github.com/open62541/open62541/pull/8302patchissue-tracking
• github.comhttps://github.com/open62541/open62541/blob/v1.5.6/src/ua_types_definition.c#L274technical-description
• github.comopen62541 v1.5.7 Release Noteshttps://github.com/open62541/open62541/releases/tag/v1.5.7release-notes
• www.vulncheck.comVulnCheck Advisory: open62541 1.5.0 before 1.5.7 Integer Overflow Heap Buffer Overflow via Custom DataTypehttps://www.vulncheck.com/advisories/open62541-1.5.0-before-1.5.7-integer-overflow-heap-buffer-overflow-via-custom-datatypethird-party-advisory