gf2n.cpp in Crypto++ (aka cryptopp) through 8.9.0 allows attackers to cause a denial of service (application crash) via DER public-key data for an F(2^m) curve, if the degree of each term in the polynomial is not strictly decreasing.
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-50980.json"