Is CVE-2026-43514 in the CISA KEV catalog?

No. CVE-2026-43514 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-43514?

CVE-2026-43514 has a CVSS v3 base score of 3.7 (LOW).

What is the EPSS score for CVE-2026-43514?

CVE-2026-43514 has an EPSS score of 0.35% (27th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-43514?

Upgrade tomcat10 on debian 12 to 10.1.55-1~deb12u1 or later.

CVE & CISA-KEV Catalog

CVE-2026-43514

LOW

3.7

CVSS v3

NVD

Description

Observable Timing Discrepancy vulnerability when comparing AJP secret in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.21, from 10.1.0-M1 through 10.1.54, from 9.0.0.M1 through 9.0.117, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Older unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118 which fix the issue.

CWE-208

How to fix

Remediation Available

tomcat10Debian

Fixed in:10.1.55-1~deb12u1CVE-2026-43514

Fixed in:10.1.55-1~deb13u1CVE-2026-43514

Fixed in:10.1.55-1CVE-2026-43514

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 ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

0.35%probability of exploitation in 30 days

27thpercentile

Low risk: more likely to be exploited than 27% of all known CVEs.

References

Vendor Advisory1

lists.apache.org

Third-Party Advisory1

openwall.com

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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 2026-05-14.