{"cve":"CVE-2018-15560","nvd":{"published":"2018-08-20T00:29:00.697","modified":"2026-06-17T01:42:44.957","status":"Modified","description":"PyCryptodome before 3.6.6 has an integer overflow in the data_len variable in AESNI.c, related to the AESNI_encrypt and AESNI_decrypt functions, leading to the mishandling of messages shorter than 16 bytes.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-190"],"references":["https://github.com/Legrandin/pycryptodome/issues/198","https://whitehatck01.blogspot.com/2018/08/integer-overflow-vulnerability-in.html","https://github.com/Legrandin/pycryptodome/issues/198","https://whitehatck01.blogspot.com/2018/08/integer-overflow-vulnerability-in.html"],"products":["pycryptodome:pycryptodome"],"source":"nvd","synced_at":"2026-10-19T20:52:03.425131697+00:00"},"epss":{"cve":"CVE-2018-15560","score":0.01756,"percentile":0.7794,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-hgg3-g7gr-66r7","url":"https://osv.dev/vulnerability/GHSA-hgg3-g7gr-66r7","summary":"PyCryptodome integer overflow vulnerability","modified":"2024-10-21T21:17:53.812642Z","packages":[{"ecosystem":"PyPI","name":"pycryptodome","purl":"pkg:pypi/pycryptodome","ranges":["<3.6.6"],"fixed":["3.6.6"]}]},{"id":"PYSEC-2018-21","url":"https://osv.dev/vulnerability/PYSEC-2018-21","summary":"","modified":"2023-11-08T03:59:57.665352Z","packages":[{"ecosystem":"PyPI","name":"pycryptodome","purl":"pkg:pypi/pycryptodome","ranges":["<3.6.6"],"fixed":["3.6.6"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}