CVE-2026-9076

CVE-2026-9076

Issue summary: When CMS password-based decryption (RFC 3211 / PWRI key unwrap) processes attacker-supplied CMS data, an attacker-chosen stream-mode KEK cipher can trigger a heap out-of-bounds read in kek_unwrap_key(). Impact summary: A he…

Vulnerability class: Buffer Overflow

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-9076?
CVE-2026-9076 is a high-severity vulnerability, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2026-06-09.
How severe is CVE-2026-9076?
High severity. CVSS v3 base score is 7.5 out of 10.