How severe is CVE-2026-78401?

CVE-2026-78401 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-2026-78401 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-78401?

CVE-2026-78401 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-2026-78401?

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-2026-78401 published?

CVE-2026-78401 was published on 2026-10-08 and last updated on 2026-10-10.

CVE-2026-78401

CVE-2026-78401 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: 1% (46th 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-2026-78401?: 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-2026-78401?: CVE-2026-78401 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-2026-78401 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-78401?: CVE-2026-78401 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-2026-78401?: 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-2026-78401 published?: CVE-2026-78401 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:*:*:*:*:*:*:*:*

More vulnerabilities in Ibm Security Verify Access

CVE-2026-78406 — Critical (CVSS 9.8): 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…
CVE-2024-49803 — Critical (CVSS 9.8): IBM Security Verify Access Appliance 10.0.0 through 10.0.8 could allow a remote authenticated attacker to execute…
CVE-2021-39070 — Critical (CVSS 9.8): IBM Security Verify Access 10.0.0.0, 10.0.1.0 and 10.0.2.0 with the advanced access control authentication service…
CVE-2020-4499 — Critical (CVSS 9.8): IBM Security Access Manager 9.0.7 and IBM Security Verify Access 10.0.0 could allow an unauthorized public Oauth client…
CVE-2024-49806 — Critical (CVSS 9.4): IBM Security Verify Access Appliance 10.0.0 through 10.0.8 contains hard-coded credentials, such as a password or…
CVE-2024-49805 — Critical (CVSS 9.4): IBM Security Verify Access Appliance 10.0.0 through 10.0.8 contains hard-coded credentials, such as a password or…

All CVEs affecting Ibm Security Verify Access →

Other CWE-502 (Deserialization of Untrusted Data) vulnerabilities

CVE-2026-78162 — Critical (CVSS 10.0): Deserialization of Untrusted Data vulnerability in Apache Camel. This issue affects Apache Camel: from 4.0.0 before…
CVE-2026-70416 — Critical (CVSS 10.0): Dell ObjectScale, versions prior to 4.4.0.0, contains a Deserialization of Untrusted Data vulnerability. An…
CVE-2026-82222 — Critical (CVSS 10.0): Deserialization of Untrusted Data vulnerability in Liquid Web / StellarWP GiveWP allows Object Injection. This issue…
CVE-2026-69836 — Critical (CVSS 10.0): Deserialization of untrusted data in Microsoft Entra ID allows an unauthorized attacker to execute code over a network.
CVE-2026-17061 — Critical (CVSS 10.0): A Deserialization of Untrusted Data vulnerability affecting SIMULIA Execution Engine from Release 2023 through Release…
CVE-2026-11756 — Critical (CVSS 10.0): A Deserialization of Untrusted Data vulnerability affecting Station Launcher App in 3DEXPERIENCE platform from Release…

Browse all CWE-502 (Deserialization of Untrusted Data) vulnerabilities →