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CVE-2026-18036

🗓️ 02 Oct 2026 08:17:00Reported by ubuntu.comType 
ubuntucve
 ubuntucve🔗 ubuntu.com👁 11 Views

Timing side-channel in Bouncy Castle for Java NTRU reductions leaks private key data.

Related
Packages
Refs
ReporterTitlePublishedViews
Family
ibm
IBM Security Bulletins		Security Bulletin:Multiple vulnerabilities in bcpkix-jdk18on may affect IBM Infosphere Change Data Capture (CVE-2026-17508, CVE-2026-18036)
26 Oct 202607:32
–ibm
ibm
IBM Security Bulletins		Security Bulletin: Multiple Vulnerabilities affect IBM License Metric Tool v9
30 Oct 202610:25
–ibm
ibm
IBM Security Bulletins		Security Bulletin: IBM App Connect for Manufacturing is vulnerable to multiple vulnerabilities due to Bouncy Castle
29 Oct 202608:21
–ibm
ibm
IBM Security Bulletins		Security Bulletin: Multiple Vulnerabilities affect VM Manager Tool and Scans Relay as part of IBM License Metric Tool v9 Software as a Service
30 Oct 202609:33
–ibm
ibm
IBM Security Bulletins		Security Bulletin: IBM Rational Developer for i is affected by Multiple vulnerabilities
28 Oct 202615:51
–ibm
ibm
IBM Security Bulletins		Security Bulletin: Multiple vulnerabilities in IBM Tivoli Network Manager IP Edition
15 Oct 202607:47
–ibm
ibm
IBM Security Bulletins		Security Bulletin: Multiple security vulnerabilities are addressed with IBM Content Cortex(CCx) 26.0.0-IF004 and 26.0.1-IF001 for October 2026
30 Oct 202603:21
–ibm
ibm
IBM Security Bulletins		Security Bulletin: IBM Instana Observability is affected by multiple vulnerabilities within Instana Agent container image
14 Oct 202612:58
–ibm
ibm
IBM Security Bulletins		Security Bulletin: IBM BigMemory Max is affected by bcprov-jdk18on that could allow attackers to execute a denial of service by exhausting system resources
28 Oct 202618:03
–ibm
ibm
IBM Security Bulletins		Security Bulletin: IBM SPSS Modeler is affected by vulnerabilities in Bouncy Castle for Java
21 Oct 202615:04
–ibm
Rows per page
OSOS VersionArchitecturePackagePackage VersionFilename
Ubuntu16.04allbouncycastle0bouncycastle_0_all.deb
Ubuntu18.04allbouncycastle0bouncycastle_0_all.deb
Ubuntu20.04allbouncycastle0bouncycastle_0_all.deb
Ubuntu22.04allbouncycastle0bouncycastle_0_all.deb
Ubuntu24.04allbouncycastle0bouncycastle_0_all.deb
Ubuntu26.04allbouncycastle0bouncycastle_0_all.deb
Ubuntu26.10allbouncycastle0bouncycastle_0_all.deb

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16 Oct 2026 21:51Current
5.9Medium risk
Vulners AI Score5.9
CVSS 48.2
EPSS0.00282
SSVC
Bouncy Castle for JavaNTRUtiming side-channelprivate keyPolynomial.modQPolynomial.mod3NTRUSampling.mod3
11