Medium severity · published Sep 9, 2026
CVE-2026-87735
An issue was discovered in the mirage-crypto-pk package before 2.3.0 for OCaml
4.3
CVSS
0.2%
EPSS
No
On KEV
Description
An issue was discovered in the mirage-crypto-pk package before 2.3.0 for OCaml. There is an undocumented exception for a small message during RSA decryption or encryption.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 14% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MI
mirage-crypto-pk · OCaml
before 2.3.0 · source: vendor