CVE-2025-9340

nonepriority · track · 0EPSS 0.002 · 7 %ileDEEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.18% (7th) EPSS

CVSS 0 · none

Is it mine?

6 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cert_bund · osv

EPSS · scored 2026-10-27

Out-of-bounds Write vulnerability in Legion of the Bouncy Castle Inc. Bouncy Castle for Java bc-fips on All (API modules). This vulnerability is associated with program files org/bouncycastle/jcajce/provider/BaseCipher. This issue affects Bouncy Castle for Java: from BC-FJA 2.1.0 through 2.1.0.

cvss

Technical severity, 0–10. One row per scoring source.

0.0

010

base score 0–10 · higher = more severe · hover a vector to decode

v4.00noneCVSS:4.0/AV:P/AC:L/AT:P/PR:L/UI:A/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N/S:N/R:U/RE:M/U:Greensecondary · ENISA EU

v4.00noneCVSS:4.0/AV:P/AC:L/AT:P/PR:L/UI:A/VC:N/VI:N/VA:N/SC:N/SI:N/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:N/AU:X/R:U/V:X/RE:M/U:Greensecondary

v4.00noneCVSS:4.0/AV:P/AC:L/AT:P/PR:L/UI:A/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/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:N/AU:X/R:U/V:X/RE:M/U:Greensecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-787USCWE-787US

affected products (6)

Products and version ranges known to be affected.

Open Source Bouncy Castle <2.1.1all versionscert_bundDE
Open Source Bouncy Castle <2.73.8all versionscert_bundDE
Open Source Bouncy Castle< 2.1.1cert_bundDE
Open Source Bouncy Castle< 2.73.8cert_bundDE
Legion of the Bouncy Castle Inc. Bouncy Castle for Java≤ BC-FJA 2.1.0 ≤2.1.0enisa_euvdEU
Maven org.bouncycastle:bc-fips2.1.0 → 2.1.1osvUSpkg:maven/org.bouncycastle/bc-fips

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2025-1895Bouncy Castle: Mehrere SchwachstellenDeutsch2025-08-21csaf · cert_bundDE
Ein lokaler Angreifer kann mehrere Schwachstellen in Bouncy Castle ausnutzen, um Daten zu manipulieren und um einen Denial of Service Zustand herbeizuführen.
GHSA-g6rx-6wfx-gj74Bouncy Castle for Java has Out-of-Bounds Write Vulnerability2025-08-22ghsa · osvUS
Out-of-bounds Write vulnerability in Legion of the Bouncy Castle Inc. Bouncy Castle for Java bc-fips on All (API modules). This vulnerability is associated with program files org/bouncycastle/jcajce/provider/BaseCipher. This issue affects Bouncy Castle for Java: from BC-FJA 2.1.0 through 2.1.0.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund osv NVD CVE.org MITRE

published 2025-08-22modified 2026-06-17

references (5)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan