[UPDATE] [high] Bouncy Castle BC-JAVA: Multiple vulnerabilities

highCVE-2025-14813 CVE-2026-0636 CVE-2026-3505 CVE-2026-5588

An attacker can exploit multiple vulnerabilities in Bouncy Castle BC-JAVA to bypass cryptographic security measures, disclose confidential information, or cause a denial-of-service condition.

CSIRTS triage

vendor: Bouncy Castle product: BC-JAVA Authentication bypass Information disclosure Denial of service

What: An attacker can exploit multiple vulnerabilities in Bouncy Castle BC-JAVA to bypass cryptographic security measures, disclose confidential information, or cause a denial-of-service condition.
Who is affected: Deployments of Bouncy Castle BC-JAVA are affected.
Urgency: Remediation is high urgency due to the high severity and potential for exploitation.
Action: Update to the latest version of Bouncy Castle BC-JAVA.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: CERT-Bund (BSI) Security Advisories (DE · national-cert · site)
Severity: high
Published: 2026-08-12
Exploitation: Not in CISA KEV at last sync
Language: Machine-translated to English — verify against the original

Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1129

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2025-148130.31% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 23% of all EPSS-scored CVEs.
Low exploitation riskCVE-2026-06360.53% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 42% of all EPSS-scored CVEs.
Low exploitation riskCVE-2026-35050.76% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 52% of all EPSS-scored CVEs.
Low exploitation riskCVE-2026-55880.64% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 48% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2025-14813	coverage & exploitation status	NVD · CVE.org
CVE-2026-0636	coverage & exploitation status	NVD · CVE.org
CVE-2026-3505	coverage & exploitation status	NVD · CVE.org
CVE-2026-5588	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

unknownNCSC-2026-0325 [1.00] [M/H] Vulnerabilities patched in Atlassian productsncsc-nl
highexploited[NEW] [high] Atlassian Products (Bamboo, Bitbucket, Confluence, Crucible, Fisheye, and Jira): Multiple vulnera…cert-bund
high[NEW] [high] Atlassian Bamboo, Bitbucket, Confluence, Fisheye, Crucible, Jira and Jira Service Management: Mul…cert-bund
unknownexploitedMultiple vulnerabilities in IBM products (August 14, 2026)cert-fr-avis
unknownMultiple vulnerabilities in IBM products (August 07, 2026)cert-fr-avis
unknownMultiple vulnerabilities in IBM products (July 31, 2026)cert-fr-avis
high[NEW] [high] Oracle Communications: Multiple vulnerabilitiescert-bund
unknownMultiple vulnerabilities in Atlassian products (July 27, 2026)cert-fr-avis
high[NEW] [high] Oracle Fusion Middleware: Multiple vulnerabilitiescert-bund
high[NEW] [high] Oracle Utilities Applications: Multiple vulnerabilitiescert-bund
unknownMultiple vulnerabilities in IBM products (June 26, 2026)cert-fr-avis