CVE-2018-12440

4.7 mediumEPSS 0.1%

Medium (4.7) in google boringssl. EPSS 0.1% chance of exploitation in the next 30 days.

BoringSSL through 2018-06-14 allows a memory-cache side-channel attack on DSA signatures, aka the Return Of the Hidden Number Problem or ROHNP. To discover a DSA key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.

Severity

CVSS 3.0

4.7 medium

CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS: 0.1% chance of exploitation in the next 30 days; higher than 3% of CVEs (scores of 2026-10-31)
CWE: CWE-200
Published: 2018-06-15
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

google:boringssl

References

https://www.nccgroup.trust/us/our-research/technical-advisory-return-of-the-hidden-number-problem/
https://www.nccgroup.trust/us/our-research/technical-advisory-return-of-the-hidden-number-problem/

Check your stack JSON