Security Bulletin
Summary
Private keys for eight eMudhra intermediate CA certificates have been compromised. All versions of IBM® Semeru Runtimes are affected.
Vulnerability Details
CVEID: CVE-2026-114820
DESCRIPTION: Vulnerability in Java SE (component: JSSE). Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Java SE. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Java SE accessible data as well as unauthorized access to critical data or complete access to all Java SE accessible data.
CWE: CWE-327: Use of a Broken or Risky Cryptographic Algorithm
CVSS Source: secalert_us@oracle.com
CVSS Base score: 9.1
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N)
CVEID: CVE-2026-91403
DESCRIPTION: Vulnerability in Java SE (component: JSSE). Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Java SE. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Java SE accessible data as well as unauthorized access to critical data or complete access to all Java SE accessible data.
CWE: CWE-284: Improper Access Control
CVSS Source: secalert_us@oracle.com
CVSS Base score: 9.1
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N)
Affected Products and Versions
| Affected Product(s) | Version(s) |
| IBM Semeru Runtime | 8.0.302.0 - 8.0.504.5 |
| IBM Semeru Runtime | 11.0.12.0 - 11.0.32.15 |
| IBM Semeru Runtime | 17.0.0.0 - 17.0.20.15 |
| IBM Semeru Runtime | 21.0.0.0 - 21.0.12.15 |
| IBM Semeru Runtime | 25.0.0.0 - 25.0.4.15 |
Remediation/Fixes
8.0.512.0
11.0.33.0
17.0.21.0
21.0.13.0
25.0.5.0
IBM Semeru Runtime releases can be downloaded from the GitHub repositories for Semeru 8, Semeru 11, Semeru 17, Semeru 21, Semeru 25, and Semeru 26, and from the IBM Semeru Developer Center.
IBM customers requiring an update for an SDK shipped with an IBM product should contact IBM support, and/or refer to the appropriate product security bulletin.
APAR numbers are as follows:
IJ60800 (CVE-2026-114820)
IJ60759 (CVE-2026-91403)
Clients requiring additional assistance, please contact IBM Support.
Workarounds and Mitigations
Prior to the fixed releases, the IBM Semeru Runtime’s default cacerts truststore contains one root certificate which chains to the compromised intermediate certificates. It must be removed immediately using keytool:
IBM Semeru Runtimes version 8:
keytool -delete -alias "cn=emsign_ecc_root_ca_-_g3,o=emudhra_technologies_limited,ou=emsign_pki,c=in" -keystore <cacerts file>IBM Semeru Runtimes version 11:
keytool -delete -alias "cn=emsign_ecc_root_ca_-_g3,o=emudhra_technologies_limited,ou=emsign_pki,c=in" -cacertsIBM Semeru Runtimes version 17 and later:
keytool -delete -alias "cn_emsign_ecc_root_ca__g3,o_emudhra_technologies_limited,ou_emsign_pki,c_in [jdk]" -cacertsNote that some products or applications may use their own custom truststore. The commands indicated earlier in the document only remove the root certificate from the Semeru Runtime’s default cacerts truststore. Any problematic root certificates must be removed immediately from custom truststores using appropriate keytool commands.
All affected certificates have been revoked by the certificate authority, so enabling revocation checking (if it is not already enabled) by using the following command line arguments also provides protection.
-Dcom.sun.net.ssl.checkRevocation=true
-Dcom.sun.security.enableCRLDP=trueIn addition, the jarsigner tool in Semeru 17 and later can check revocation status when verifying signed JAR files:
jarsigner -verify -revcheck <JAR file>Get Notified about Future Security Bulletins
References
Acknowledgement
Change History
5 Nov 2026: Added fixed releases for Semeru 8 and 11
29 Oct 2026: Initial Publication
*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.
Disclaimer
According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY. In addition to other efforts to address potential vulnerabilities, IBM periodically updates the record of components contained in our product offerings. As part of that effort, if IBM identifies previously unidentified packages in a product/service inventory, we address relevant vulnerabilities regardless of CVE date. Inclusion of an older CVEID does not demonstrate that the referenced product has been used by IBM since that date, nor that IBM was aware of a vulnerability as of that date. We are making clients aware of relevant vulnerabilities as we become aware of them. "Affected Products and Versions" referenced in IBM Security Bulletins are intended to be only products and versions that are supported by IBM and have not passed their end-of-support or warranty date. Thus, failure to reference unsupported or extended-support products and versions in this Security Bulletin does not constitute a determination by IBM that they are unaffected by the vulnerability. Reference to one or more unsupported versions in this Security Bulletin shall not create an obligation for IBM to provide fixes for any unsupported or extended-support products or versions.
Document Location
Worldwide
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Document Information
Modified date:
06 November 2026
Initial Publish date:
29 October 2026
UID
ibm17294729
