Loading vulnerability…
CVE-2026-12860 is an improper cryptographic signature verification vulnerability in the RSADigestSigner component of Bouncy Castle for Java before 1.85 and Bouncy Castle for Java LTS from 2.73.0 before 2.73.12. RSA PKCS#1 signature verification skips comparison of the final two hash bytes when processing the NULL-omitted DigestInfo verification path. This incomplete comparison may cause crafted signatures to be incorrectly accepted, undermining signature-integrity validation.
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An RSA PKCS#1 signature-verification flaw in Bouncy Castle for Java in which the NULL-omitted verification path skips validation of the final two hash bytes.
A vulnerability in Bouncy Castle for Java and Bouncy Castle for Java LTS where RSA PKCS#1 signature verification can skip the last two hash bytes in a NULL-omitted path, potentially allowing improper signature verification.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.