CVE-2026-635738.2HighCWE-203
CVE-2026-63573: Bleichenbacher padding oracle in CMS RSA PKCS#1 v1.5 key-transport unwrap
Legion of the Bouncy Castle Inc. · bc-csharp
Affected: Legion of the Bouncy Castle Inc. bc-csharp · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
0.3%probability of exploitation in the next 30 days
Percentile not published
8.2HighCVSS
LowMediumHighCrit.
DescriptionCVE.org
The full CVE record could not be read just now. It is linked under References, and this page fills in once it has been read.
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Published
- October 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-63573 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.