CVE•Published 2026-08-03•Modified 2026-08-31•1 article on news•5 live references•NVD data
CVE-2026-12817Bouncycastle · Bc-java
Vulnerability data via NVD (ingested)
CVSS v3.1
8.6
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
EPSS percentile
6
Exploit Prediction Scoring System · top 94% of all CVEs
Weaknesses (CWE)
Description
In Bouncy Castle for Java before 1.85, OpenPGP AEAD decryption skips final tag on chunk-aligned data. 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).
Timeline
Published 2026-08-03
Modified 2026-08-31
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag0 hosts
vuln:CVE-2026-12817Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Bouncycastle Bc-java"All exposed Bouncycastle Bc-java instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Bc-java"HTTP body or banner mentions "Bc-java" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2026-12817Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-12817Censys host search filtered to this CVE id.
grep.app
CVE-2026-12817Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-12817GitHub code search for direct mentions.
Google dork
"CVE-2026-12817" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-12817 on GitHub.