How severe is CVE-2026-78406?

CVE-2026-78406 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-78406 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-78406?

CVE-2026-78406 primarily affects Ibm Security Verify Access. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-78406?

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

When was CVE-2026-78406 published?

CVE-2026-78406 was published on 2026-10-08 and last updated on 2026-10-10.

CVE-2026-78406

CVE-2026-78406 is a critical-severity vulnerability in Ibm Security Verify Access with a CVSS 3.x base score of 9.8. 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-502.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 0% (42nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-502
Affected product: Ibm Security Verify Access
Published: 2026-10-08
Last modified: 2026-10-10

Description

IBM Security Verify Access 10.0 through 10.0.9.2 and IBM Verify Identity Access 11.0 through 11.0.3 could allow a remote unauthenticated attacker to execute arbitrary code on the system due to the deserialization of untrusted data.

Frequently asked questions

What is CVE-2026-78406?: IBM Security Verify Access 10.0 through 10.0.9.2 and IBM Verify Identity Access 11.0 through 11.0.3 could allow a remote unauthenticated attacker to execute arbitrary code on the system due to the deserialization of untrusted data.
How severe is CVE-2026-78406?: CVE-2026-78406 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-78406 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-78406?: CVE-2026-78406 primarily affects Ibm Security Verify Access. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-78406?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2026-78406 published?: CVE-2026-78406 was published on 2026-10-08 and last updated on 2026-10-10.

References

https://www.ibm.com/support/pages/node/7291628

Affected products (4)

cpe:2.3:a:ibm:security_verify_access:*:*:*:*:*:*:*:*
cpe:2.3:a:ibm:security_verify_access_container:*:*:*:*:*:*:*:*
cpe:2.3:a:ibm:verify_identity_access:*:*:*:*:*:*:*:*
cpe:2.3:a:ibm:verify_identity_access_container:*:*:*:*:*:*:*:*

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