{"id":"CVE-2023-49558","aliases":["AZL-33358","AZL-35386","DEBIAN-CVE-2023-49558","EUVD-2023-53515","GHSA-w3p5-6w9w-p383","UBUNTU-CVE-2023-49558"],"status":"published","title":"An issue in YASM 1.3.0.86.g9def allows a remote attacker to cause a denial of service via the...","description":"An issue in YASM 1.3.0.86.g9def allows a remote attacker to cause a denial of service via the expand_mmac_params function in the modules/preprocs/nasm/nasm-pp.c component.","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.00382,"percentile":0.32641,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2024-01-02T00:00:00Z","modified":"2026-11-05T05:40:51Z","affected":[{"source":"osv","ecosystem":"Azure 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Tracking","Vendor Advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-49558","tags":["web"]},{"url":"https://github.com/advisories/GHSA-w3p5-6w9w-p383"},{"url":"https://security-tracker.debian.org/tracker/CVE-2023-49558","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2023-49558","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-49558","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2023-49558","description":"An issue in YASM 1.3.0.86.g9def allows a remote attacker to cause a denial of service via the expand_mmac_params function in the modules/preprocs/nasm/nasm-pp.c component.","status":"published","published":"2024-01-02T00:00:00Z","modified":"2025-06-03T14:47:08.846Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"adp"}],"updated_at":"2026-11-02T14:35:12.998024Z"}],"euvd":[{"id":"EUVD-2023-53515","description":"An issue in YASM 1.3.0.86.g9def allows a remote 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