GOSTCTR implementation unable to process more than 255 blocks correctly

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Summary

CVECVE-2025-14813
StatePUBLISHED
Assignerbcorg
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-15 10:16:38 UTC
Updated2026-04-17 15:38:09 UTC
DescriptionUse of a Broken or Risky Cryptographic Algorithm vulnerability in Legion of the Bouncy Castle Inc. BC-JAVA bcprov on all (core modules). This vulnerability is associated with program files G3413CTRBlockCipher. GOSTCTR implementation unable to process more than 255 blocks correctly. This issue affects BC-JAVA: from 1.59 before 1.84.

Risk And Classification

Primary CVSS: v4.0 9.3 CRITICAL from 91579145-5d7b-4cc5-b925-a0262ff19630

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:M/U:Red

EPSS: 0.000040000 probability, percentile 0.001600000 (date 2026-04-21)

Problem Types: CWE-327 | CWE-327 CWE-327: Use of a Broken or Risky Cryptographic Algorithm

VersionSourceTypeScoreSeverityVector
4.091579145-5d7b-4cc5-b925-a0262ff19630Secondary9.3CRITICALCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:X/C...
4.0CNACVSS9.3CRITICALCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/RE:M/...

CVSS v4.0 Breakdown

Attack Vector
Local
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
Confidentiality
High
Integrity
High
Availability
None
Sub Conf.
High
Sub Integrity
High
Sub Availability
None

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:M/U:Red

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Legion Of The Bouncy Castle Inc. BC-JAVA affected 1.59 1.84 maven all

References

ReferenceSourceLinkTags
github.com/bcgit/bc-java/commit/b42574345414e4b7c8051b16fa1fafe01c29871f 91579145-5d7b-4cc5-b925-a0262ff19630 github.com
github.com/bcgit/bc-java/commit/701686cb0184cd9ae103c801b3581fdf95c6d4f3 91579145-5d7b-4cc5-b925-a0262ff19630 github.com
github.com/bcgit/bc-java/wiki/CVE%E2%80%902025%E2%80%9014813 91579145-5d7b-4cc5-b925-a0262ff19630 github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: XlabAI Team of Tencent Xuanwu Lab (en)

CNA: Atuin Automated Vulnerability Discovery Engine (en)

CNA: Lili Tang, Guannan Wang, and Guancheng Li (en)

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