Description
A timing-based side-channel flaw was found in libgcrypt's RSA implementation. This issue may allow a remote attacker to initiate a Bleichenbacher-style attack, which can lead to the decryption of RSA ciphertexts.
References9
- access.redhat.com/errata/RHSA-2024:9404
- access.redhat.com/errata/RHSA-2025:3530
- access.redhat.com/errata/RHSA-2025:3534
- access.redhat.com/security/cve/CVE-2024-2236
- bugzilla.redhat.com/show_bug.cgi?id=2245218
- access.redhat.com/security/cve/CVE-2024-2236
- bugzilla.redhat.com/show_bug.cgi?id=2245218
- bugzilla.redhat.com/show_bug.cgi?id=2268268
- cert-portal.siemens.com/productcert/html/ssa-398330.html
Metrics
- CVSS 3.1
-
5.9
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N - EPSS — exploit probability
- 1% percentile: 67 · as of 5 November 2026
- CWE
- CWE-385
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.