CVE-2007-6721
The Legion of the Bouncy Castle Java Cryptography API before release 1.38, as used in Crypto Provider Package before 1.36, has unknown impact and remote attack vectors related to "a Bleichenbacher vulnerability in simple RSA CMS signatures without…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.41%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The Legion of the Bouncy Castle Java Cryptography API before release 1.38, as used in Crypto Provider Package before 1.36, has unknown impact and remote attack vectors related to "a Bleichenbacher vulnerability in simple RSA CMS signatures without signed attributes."
- CVSS 2.0
- 10.0 HIGHAV:N/AC:L/Au:N/C:C/I:C/A:C
- EPSS
- 2.41% probability · 84th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- bouncycastle/bc-java · bouncycastle/bouncy-castle-crypto-package
- Source
- cve@mitre.org
EPSS 2.4% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://freshmeat.net/projects/bouncycastlecryptoapi/releases/265580
- http://www.bouncycastle.org/csharp/Patch, Vendor Advisory
- http://www.bouncycastle.org/devmailarchive/msg08195.htmlPatch, Vendor Advisory
- http://www.bouncycastle.org/releasenotes.html
- http://www.osvdb.org/50358
- http://www.osvdb.org/50359
- http://www.osvdb.org/50360
- http://freshmeat.net/projects/bouncycastlecryptoapi/releases/265580
- http://www.bouncycastle.org/csharp/Patch, Vendor Advisory
- http://www.bouncycastle.org/devmailarchive/msg08195.htmlPatch, Vendor Advisory
- http://www.bouncycastle.org/releasenotes.html
- http://www.osvdb.org/50358
- http://www.osvdb.org/50359
- http://www.osvdb.org/50360
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.