How severe is CVE-2026-6840?

CVE-2026-6840 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-6840 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-6840?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-6840 have an EU (EUVD) identifier?

Yes. CVE-2026-6840 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-24629.

When was CVE-2026-6840 published?

CVE-2026-6840 was published on 2026-04-22 and last updated on 2026-06-17.

CVE-2026-6840

CVE-2026-6840 is a medium-severity vulnerability with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-129.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-24629
Weakness: CWE-129
Published: 2026-04-22
Last modified: 2026-06-17

Description

Missing bounds validation for operator could allow out of range operator-code lookup during model loading Affected version is prior to commit 1.30.0.

Frequently asked questions

What is CVE-2026-6840?: Missing bounds validation for operator could allow out of range operator-code lookup during model loading Affected version is prior to commit 1.30.0.
How severe is CVE-2026-6840?: CVE-2026-6840 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-6840 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-6840?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-6840 have an EU (EUVD) identifier?: Yes. CVE-2026-6840 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-24629.
When was CVE-2026-6840 published?: CVE-2026-6840 was published on 2026-04-22 and last updated on 2026-06-17.

References

https://github.com/Samsung/ONE/pull/16481

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