Legion of the Bouncy Castle BC-JAVA/BC-LTS-JAVA/BC-FJA prior 1.85/2.73.12/1.0.13/2.0.13/2.1.13 memory allocation

CVSS Meta Temp Score
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CTI Interest Score
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5.8$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in Legion of the Bouncy Castle BC-JAVA, BC-LTS-JAVA and BC-FJA. Impacted is an unknown function. The manipulation results in input validation. This vulnerability is cataloged as CVE-2026-59649. The attack may be launched remotely. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as problematic has been found in Legion of the Bouncy Castle BC-JAVA, BC-LTS-JAVA and BC-FJA. Affected is an unknown function. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-789. The product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated. This is going to have an impact on availability. CVE summarizes:

In Bouncy Castle for Java before 1.85, OpenPGP user-attribute subpacket length bounded only by JVM max memory. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bcpg-fips 1.0.13 (1.0.X series), 2.0.13 (2.0.X series) and 2.1.13 (2.1.X series).

The advisory is available at github.com. This vulnerability is traded as CVE-2026-59649 since 07/06/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 331795 (Linux Distros Unpatched Vulnerability : CVE-2026-59649), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 1.85, 2.73.12, 1.0.13, 2.0.13 or 2.1.13 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (331795) and CERT Bund (WID-SEC-2026-2622). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

  • Open Source Bouncy Castle

Productinfo

Type

Vendor

Name

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: 5.9
VulDB Meta Temp Score: 5.8

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔒

CVSSv2info

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

Exploitinginfo

Class: Memory allocation
CWE: CWE-789 / CWE-400 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 331795
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-59649

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: BC-JAVA/BC-LTS-JAVA/BC-FJA 1.85/2.73.12/1.0.13/2.0.13/2.1.13

Timelineinfo

07/06/2026 CVE reserved
08/03/2026 +28 days Advisory disclosed
08/03/2026 +0 days VulDB entry created
09/02/2026 +30 days VulDB entry last update

Sourcesinfo

Advisory: github.com
Status: Confirmed

CVE: CVE-2026-59649 (🔒)
GCVE (CVE): GCVE-0-2026-59649
GCVE (VulDB): GCVE-100-385434
CERT Bund: WID-SEC-2026-2622 - Bouncy Castle: Mehrere Schwachstellen

Entryinfo

Created: 08/03/2026 03:30
Updated: 09/02/2026 17:29
Changes: 08/03/2026 03:30 (54), 08/04/2026 03:01 (7), 08/04/2026 09:37 (2), 09/02/2026 17:29 (26)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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