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VulnerabilityCVE-2026-19491Published 2026-10-08

CVE-2026-19491 — IBM Security Verify Access

critical

As of 2026-10-10, CVE-2026-19491 is a CRITICAL-severity vulnerability in IBM Security Verify Access, CVSS v3.1 9.1, EPSS 0.3% (24.2th percentile). Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2026-19491, most recently “IBM Verify Access / Verify Identity Access: 22 Flaws Patched Incl. Unauthenticated RCE via Deserialization (CVE-2026-78401, CVE-2026-78406)”.

CVSS v3.1
9.1/10Critical
EPSS
0.3%Higher than 24.2% of scored CVEs
CISA KEV
NoNot in the KEV catalog
Tracked threats
1Campaigns referencing it
Priority
5.5/10Threadlinqs triage score
Published
Updated 2026-10-10
CVSS v3.1 9.1 (CRITICAL) · EPSS 0.3% (higher than 24.2% of all scored CVEs) · Priority 5.5/10 · Published 2026-10-08

Last updated:

What is CVE-2026-19491?

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 attacker to bypass authentication due to improper authentication.

The record classifies CVE-2026-19491 under weakness class CWE-287. Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs no user interaction, and has high impact on confidentiality, integrity. 4 affected-product entries are recorded, across 1 vendor, listed below. The identifier was first published 4 days ago.

Severity and exploitation probability

CVSS v3.1 base score
9.1 — CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS (FIRST)
0.3% probability of exploitation in the next 30 days, higher than 24.2% of all scored CVEs
CISA KEV
Not listed in the CISA Known Exploited Vulnerabilities catalog
Threadlinqs priority
5.5/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
Published
2026-10-08, last modified 2026-10-10

Is CVE-2026-19491 being exploited?

It currently carries a trending score of 40 in the Threadlinqs vulnerability feed.

Affected products and versions

  • IBM: Security Verify Access, Verify Identity Access, Security Verify Access Container, Verify Identity Access Container

How to fix CVE-2026-19491

No vendor patch reference has been recorded for CVE-2026-19491 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

Threat activity tracking CVE-2026-19491

1 tracked threat in the Threadlinqs corpus references CVE-2026-19491, either in the campaign’s CVE list or as an indicator on the campaign record.

Sources

Enriched from CVE.org, FIRST EPSS, GitHub Security Advisories. Last verified by Threadlinqs on .

Vendor advisory and patch