{"id":"CVE-2021-33560","revision":"11f6a1cab04a4926bdf94c24654616f6","records":[{"revision":"11f6a1cab04a4926bdf94c24654616f6","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2021-33560","aliases":[],"title":"Libgcrypt before 1.8.8 and 1.9.x before 1.9.3 mishandles ElGamal encryption because it lacks exponent blinding to address a side-channel attack against mpi_powm, and the window size is not chosen appropriately. This, for example, affects us…","description":"Libgcrypt before 1.8.8 and 1.9.x before 1.9.3 mishandles ElGamal encryption because it lacks exponent blinding to address a side-channel attack against mpi_powm, and the window size is not chosen appropriately. This, for example, affects use of ElGamal in OpenPGP.","state":0,"publishedAt":"2021-06-08T00:00:00+00:00","modifiedAt":"2026-10-14T11:39:39.511+00:00","affected":[{"ecosystem":"Vendor product","name":"n/a","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"n/a\",\n                    \"product\": \"n/a\",\n                    \"versions\": [\n                        {\n                            \"version\": \"n/a\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://dev.gnupg.org/T5328","https://lists.debian.org/debian-lts-announce/2021/06/msg00021.html","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R7OAPCUGPF3VLA7QAJUQSL255D4ITVTL/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BKKTOIGFW2SGN3DO2UHHVZ7MJSYN4AAB/","https://www.oracle.com/security-alerts/cpuoct2021.html","https://dev.gnupg.org/T5466","https://dev.gnupg.org/T5305","https://dev.gnupg.org/rCe8b7f10be275bcedb5fc05ed4837a89bfd605c61","https://www.oracle.com/security-alerts/cpujan2022.html","https://www.oracle.com/security-alerts/cpuapr2022.html","https://www.oracle.com/security-alerts/cpujul2022.html","https://security.gentoo.org/glsa/202210-13"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2021-33560","license":"CVE Program Terms of Use","key":"cve-program:CVE-2021-33560","identifiers":["CVE-2021-33560"]},"retained":false,"historicalAffected":[]}],"coverage":[]}