CVE-2026-8149

MEDIUM

GCM chunking can lead to bad tag exception on decryption

Title source: cna

Description

A vulnerability in 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. This issue affects BC-FJA: from 2.1.0 through 2.1.2.

References (1)

Core 1

Core References

Vendor Advisory vendor-advisory

https://do-not-publish.bouncycastle.org/do_not_publish

Scores

CVSS v4 5.1

EPSS 0.0002

EPSS Percentile 5.2%

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/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:X/V:X/RE:M/U:Amber

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-1068

Status published

Products (2)

Legion of the Bouncy Castle Inc./BC-FJA 2.1.0 - 2.1.2

org.bouncycastle/bc-fips 2.1.0 - 2.1.2Maven

Published May 08, 2026

Tracked Since May 08, 2026