How severe is CVE-2026-7870?

CVE-2026-7870 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-7870 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-7870?

CVE-2026-7870 primarily affects Ibm I. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-7870?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-7870 have an EU (EUVD) identifier?

Yes. CVE-2026-7870 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36250.

When was CVE-2026-7870 published?

CVE-2026-7870 was published on 2026-06-11 and last updated on 2026-06-17.

CVE-2026-7870

CVE-2026-7870 is a high-severity vulnerability in Ibm I with a CVSS 3.x base score of 8.8. 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-427.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 0% (26th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-36250
Weakness: CWE-427
Affected product: Ibm I
Published: 2026-06-11
Last modified: 2026-06-17

Description

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a user to gain elevated privileges due to an unqualified library call. A malicious actor could cause user-controlled code to run with administrator privilege.

Frequently asked questions

What is CVE-2026-7870?: IBM i 7.6, 7.5, 7.4, and 7.3 could allow a user to gain elevated privileges due to an unqualified library call. A malicious actor could cause user-controlled code to run with administrator privilege.
How severe is CVE-2026-7870?: CVE-2026-7870 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-7870 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-7870?: CVE-2026-7870 primarily affects Ibm I. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-7870?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-7870 have an EU (EUVD) identifier?: Yes. CVE-2026-7870 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36250.
When was CVE-2026-7870 published?: CVE-2026-7870 was published on 2026-06-11 and last updated on 2026-06-17.

References

https://www.ibm.com/support/pages/node/7275756

Affected products (4)

cpe:2.3:o:ibm:i:7.3:*:*:*:*:*:*:*
cpe:2.3:o:ibm:i:7.4:*:*:*:*:*:*:*
cpe:2.3:o:ibm:i:7.5:*:*:*:*:*:*:*
cpe:2.3:o:ibm:i:7.6:*:*:*:*:*:*:*

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