Medium severity · published Sep 9, 2026
CVE-2026-87737
An issue was discovered in the mirage-crypto-ec package before 2.4.0 for OCaml
5.9
CVSS
0.3%
EPSS
No
On KEV
Description
An issue was discovered in the mirage-crypto-ec package before 2.4.0 for OCaml. There is a timing side channel for NIST elliptic-curve scalar multiplication: the time required for a lookup can depend on a secret.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 26% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MI
mirage-crypto-ec · OCaml
before 2.4.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-87737
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-87737
osv.dev
https://osv.dev/vulnerability/OSEC-2026-17
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4.3
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An issue was discovered in the mirage-crypto-ec package before 2.3.0 for OCaml