Legion of the Bouncy Castle BC-FJA up to 2.1.2 inconsistency between implementation and documented design

CVSS Meta Temp Score
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CTI Interest Score
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4.0$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Legion of the Bouncy Castle BC-FJA up to 2.1.2. The impacted element is an unknown function. The manipulation leads to inconsistency between implementation and documented design. This vulnerability is traded as CVE-2026-8149. An attack has to be approached locally. There is no exploit available.

Detailsinfo

A vulnerability was found in Legion of the Bouncy Castle BC-FJA up to 2.1.2 and classified as problematic. This issue affects some unknown processing. The manipulation with an unknown input leads to a inconsistency between implementation and documented design vulnerability. Using CWE to declare the problem leads to CWE-1068. The implementation of the product is not consistent with the design as described within the relevant documentation. Impacted is availability. The summary by CVE is:

A vulnerability in Legion of the Bouncy Castle Inc. BC-LTS bcprov-lts8on on X86_64, AVX, AVX-512f, Linux, Legion of the Bouncy Castle Inc. BC-FJA bc-fips on Linux, X86_64, AVX, AVX-512f. This vulnerability is associated with program files gcm128w, gcm512w, gcm128w.C, gcm512w.C. This issue affects BC-LTS: from 2.73.0 before 2.73.11; BC-FJA: from 2.1.0 before 2.1.3.

The weakness was shared by Michael Schäfer. It is possible to read the advisory at do-not-publish.bouncycastle.org. The identification of this vulnerability is CVE-2026-8149 since 05/08/2026. The exploitation is known to be easy. Attacking locally is a requirement. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 4.0
VulDB Meta Temp Score: 4.0

VulDB Base Score: 4.0
VulDB Temp Score: 4.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Inconsistency between implementation and documented design
CWE: CWE-1068 / CWE-1059
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

05/08/2026 Advisory disclosed
05/08/2026 +0 days CVE reserved
05/08/2026 +0 days VulDB entry created
07/21/2026 +74 days VulDB entry last update

Sourcesinfo

Advisory: do-not-publish.bouncycastle.org
Researcher: Michael Schäfer
Status: Not defined

CVE: CVE-2026-8149 (🔒)
GCVE (CVE): GCVE-0-2026-8149
GCVE (VulDB): GCVE-100-362039

Entryinfo

Created: 05/08/2026 09:03
Updated: 07/21/2026 14:12
Changes: 05/08/2026 09:03 (67), 05/19/2026 02:57 (1), 07/21/2026 14:12 (1)
Complete: 🔍
Cache ID: 216::103

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