SB2026052534 - Multiple vulnerabilities in Bouncy Castle for Java LTS

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Main Vulnerability Database SB2026052534

SB2026052534 - Multiple vulnerabilities in Bouncy Castle for Java LTS

Published: May 25, 2026

Security Bulletin ID SB2026052534
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 4
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 4 vulnerabilities.


1) Resource exhaustion (CVE-ID: CVE-2025-9092)

CWE-ID: CWE-400 - Resource exhaustion

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to uncontrolled resource consumption in org.Bouncycastle.Crypto.Fips.NativeLoader when processing input that triggers excessive allocation. A remote attacker can supply crafted input to cause a denial of service.


2) Out-of-bounds write (CVE-ID: CVE-2025-9340)

CWE-ID: CWE-787 - Out-of-bounds write

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to corrupt memory.

The vulnerability exists due to out-of-bounds write in BaseCipher when processing input. A remote attacker can send specially crafted input to corrupt memory.


3) Resource exhaustion (CVE-ID: CVE-2025-9341)

CWE-ID: CWE-400 - Resource exhaustion

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to uncontrolled resource consumption in org/bouncycastle/crypto/fips/AESNativeCBC.Java when processing input. A remote attacker can trigger excessive allocation to cause a denial of service.


4) Resource exhaustion (CVE-ID: CVE-2025-12194)

CWE-ID: CWE-400 - Resource exhaustion

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to uncontrolled resource consumption in API modules when processing crafted input that triggers excessive allocation. A remote attacker can send crafted input to cause a denial of service.

The issue is associated with multiple AES and SHA native implementation files.


Remediation

Install update from vendor's website.

References