CVE-2025-8885 PUBLISHED

Possible DOS in processing specially formed ASN.1 Object Identifiers

Assigner: bcorg
Reserved: 12.08.2025 Published: 12.08.2025 Updated: 12.08.2025

Allocation of Resources Without Limits or Throttling vulnerability in Legion of the Bouncy Castle Inc. Bouncy Castle for Java on All (API modules) allows Excessive Allocation. This vulnerability is associated with program files https://github.Com/bcgit/bc-java/blob/main/core/src/main/java/org/bouncycastle/asn1/ASN1ObjectIdentifier.Java.

This issue affects Bouncy Castle for Java: from BC 1.0 through 1.77, from BC-FJA 1.0.0 through 2.0.0.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/S:P/R:U/RE:M/U:Amber
CVSS Score: 6.3

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	Present	Availability	Low	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	Legion of the Bouncy Castle Inc.
Product	Bouncy Castle for Java
Versions	Default: unaffected affected from BC 1.0 to 1.77 (incl.) affected from BC-FJA 1.0.0 to 2.0.0 (incl.)

Affected Configurations

To be exposed to the issue a system needs to be consuming ASN.1 structures which are otherwise unvetted or unvalidated.

Workarounds

Limiting the size of ASN.1 objects that can be loaded from "the wild", or putting in place some other validation for such objects, will mitigate the risk of an exploit by automatically putting a cap on the maximum size of an ASN.1 OBJECT IDENTIFIER.

Credits

Bing Shi finder

References

https://github.com/bcgit/bc-java/wiki/CVE%E2%80%902025%E2%80%908885

Problem Types

CWE-770 Allocation of Resources Without Limits or Throttling CWE

Impacts

CAPEC-130 Excessive Allocation