CVE-2026-74048

MEDIUM

6.5

CVSS v3

Description

Not Failing Securely ('Failing Open') vulnerability in Apache Tomcat. If the OpenSSLLifecycleListener is configured to use FIPS mode but FIPS activation fails, Tomcat logs and error but continues to use JSSE in non-FIPS mode with the provided configuration. This issue affects Apache Tomcat: from 11.0.0-M14 through 11.0.26, from 10.1.22 through 10.1.60, from 9.0.92 through 9.0.122. Users are recommended to upgrade to version 11.0.27, 10.1.61 or 9.0.123, which fix the issue.

CWE-636

How to fix

Remediation Available

tomcat9Debian

Fixed in:9.0.70-2CVE-2026-74048

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Exploit Intelligence

0.45%probability of exploitation in 30 days

39thpercentile

Low risk: more likely to be exploited than 39% of all known CVEs.

References

Other references2

Related Vulnerabilities

Other CWE-636 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-43532	High	8.8	12%	-	Fix
CVE-2023-28840	High	7.5	2.6%	-	Fix
CVE-2021-1578	High	8.8	2.0%	-	-
CVE-2023-28842	Medium	6.8	1.4%	-	Fix
CVE-2025-21210	Medium	4.2	1.1%	-	Fix
CVE-2026-53913	Critical	9.8	1.1%	-	Fix

Common questions

How do I fix CVE-2026-74048?

Upgrade tomcat9 on debian 12 to 9.0.70-2 or later.

Is CVE-2026-74048 being actively exploited?

Not that we know of. CVE-2026-74048 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.45% is the estimated probability that it will be exploited in the next 30 days. That is higher than 39% of all scored CVEs.

How severe is CVE-2026-74048?

CVE-2026-74048 has a CVSS v3 base score of 6.5, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2026-74048 affect?

Published advisories record a fix for tomcat9 (Debian). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-10-29.