How severe is CVE-2026-7770?

CVE-2026-7770 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-2026-7770 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-7770?

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-2026-7770 have an EU (EUVD) identifier?

Yes. CVE-2026-7770 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-33730.

When was CVE-2026-7770 published?

CVE-2026-7770 was published on 2026-06-01 and last updated on 2026-06-17.

CVE-2026-7770

CVE-2026-7770 is a high-severity vulnerability 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-74.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 0% (35th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-33730
Weakness: CWE-74
Published: 2026-06-01
Last modified: 2026-06-17

Description

IBM i Access Family 1.1.5.0 through 1.1.9.12 IBM i Access Client Solutions (ACS) is vulnerable to remote code execution when configured to listen for requests from IBM i Navigator.

Frequently asked questions

What is CVE-2026-7770?: IBM i Access Family 1.1.5.0 through 1.1.9.12 IBM i Access Client Solutions (ACS) is vulnerable to remote code execution when configured to listen for requests from IBM i Navigator.
How severe is CVE-2026-7770?: CVE-2026-7770 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-2026-7770 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-7770?: 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-2026-7770 have an EU (EUVD) identifier?: Yes. CVE-2026-7770 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-33730.
When was CVE-2026-7770 published?: CVE-2026-7770 was published on 2026-06-01 and last updated on 2026-06-17.

References

https://www.ibm.com/support/pages/node/7274214

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