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PT-2026-33031

🗓️ 15 Apr 2026 00:00:00Reported by Positive TechnologiesType 
ptsecurity
 ptsecurity🔗 dbugs.ptsecurity.com👁 6 Views

Vulnerability in Bouncy Castle Java PKIX: CompositeVerifier accepts empty signature sequences.

Related
Refs
ReporterTitlePublishedViews
Family
IBM Security Bulletins		Security Bulletin: Due to use of bcpkix-jdk18on-1.81.jar, IBM Sterling Connect:Direct Web Services is affected by Use of a Broken or Risky Cryptographic Algorithm vulnerability.
4 Jun 202602:55
–ibm
IBM Security Bulletins		Security Bulletin: Multiple vulnerabilities in IBM Rational Developer for i (CVE-2026-3505, CVE-2025-14813, CVE-2026-0636, CVE-2026-5598, CVE-2026-33671, CVE-2026-33672, CVE-2026-5588, CVE-2026-40175)
8 Jun 202613:55
–ibm
IBM Security Bulletins		Security Bulletin: IBM® Db2® is affected by vulnerabilities in bcprov-jdk18on-1.82 and bcpkix-jdk18on-1.82.
23 Jun 202619:54
–ibm
IBM Security Bulletins		Security Bulletin: There is a vulnerability in bcpkix-jdk18on-1.81.jar used by IBM Maximo Manage application in IBM Maximo Application Suite (CVE-2026-5588)
29 May 202609:58
–ibm
IBM Security Bulletins		Security Bulletin: Maximo AI Service uses multiple third party dependencies which are vulnerable to multiple CVEs.
1 Jun 202608:35
–ibm
IBM Security Bulletins		Security Bulletin: MongoDB Enterprised Advanced affected by: Use of a Broken or Risky Cryptographic Algorithm (CVE-2026-5588)
15 Jun 202622:18
–ibm
IBM Security Bulletins		Security Bulletin: IBM ApplinX is vulnerable to multiple vulnerabilities due to the use of Bouncy Castle library (CVE-2023-33202, CVE-2025-8916, CVE-2026-5588, CVE-2025-14813, CVE-2026-5598, CVE-2026-0636)
19 Jun 202608:51
–ibm
IBM Security Bulletins		Security Bulletin: IBM InfoSphere Information Server is affected by a vulnerability in Bouncy Castle bcpkix (CVE-2026-5588)
24 Jun 202622:18
–ibm
IBM Security Bulletins		Security Bulletin: Multiple Security Vulnerabilities in third-Party libraries used by IBM Tivoli Netcool Configuration Manager
20 Jun 202607:57
–ibm
IBM Security Bulletins		Security Bulletin: IBM Sterling Connect:Direct for Microsoft Windows is vulnerable to an issue in Bouncy Castle
27 May 202615:07
–ibm
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08 Jun 2026 00:00Current
6.7Medium risk
Vulners AI Score6.7
CVSS 3.17.5
CVSS 46.3
EPSS0.00259
SSVC
Bouncy Castle JavaComposite VerifierEmpty SignatureSignature ValidationRisky AlgorithmsOlder Versions
6