SECUFOCUSNOW
Home›CVE index›CVE-2026-34486
CISA KEV · Known exploitedHigh

CVE-2026-34486

Apache Software Foundation Apache Tomcat, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 10.0 Extended Update Support

Missing Encryption of Sensitive Data vulnerability in Apache Tomcat due to the fix for CVE-2026-29146 allowing the bypass of the EncryptInterceptor. This issue affects Apache Tomcat: 11.0.20, 10.1.53, 9.0.116. Users are recommended to upgrade to version 11.0.21, 10.1.54 or 9.0.117, which fix the issue.

CVSS
7.5
EPSS
42.6%
98.6% percentile
CISA KEV
Listed
Published
2026.04.10
PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV
Exploit probability42.6%
Technical severityCVSS 7.5

Vulnerability overview

Missing Encryption of Sensitive Data vulnerability in Apache Tomcat due to the fix for CVE-2026-29146 allowing the bypass of the EncryptInterceptor. This issue affects Apache Tomcat: 11.0.20, 10.1.53, 9.0.116. Users are recommended to upgrade to version 11.0.21, 10.1.54 or 9.0.117, which fix the issue.

Affected product and versions

Product
Apache Software Foundation Apache Tomcat, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 10.0 Extended Update Support
Affected versions
>= 11.0.20, >= 10.1.53, >= 9.0.116, 9.0.116, 10.1.53, 11.0.20
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
CISA required action

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Due date: 2026.08.07
  1. 1
    Identify

    Confirm that Apache Software Foundation Apache Tomcat, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 10.0 Extended Update Support and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE
CWE-311, CWE-807
KEV added
2026.08.04
Ransomware use
미확인
CVE-2026-34486 — Apache Software Foundation Apache Tomcat, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 10.0 Extended Update Support | SECUFOCUS NOW