{"id":"CVE-2021-27343","aliases":["EUVD-2021-14103","GHSA-4v56-mrhv-6j2m"],"status":"published","title":"SerenityOS Unspecified is affected by: Buffer Overflow. The impact is: obtain sensitive...","description":"SerenityOS Unspecified is affected by: Buffer Overflow. The impact is: obtain sensitive information (context-dependent). The component is: /Userland/Libraries/LibCrypto/ASN1/DER.h Crypto::der_decode_sequence() function. The attack vector is: Parsing RSA Key ASN.1.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.01673,"percentile":0.77179,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-120"],"published":"2021-04-06T12:07:12Z","modified":"2026-06-17T03:44:40Z","products":[{"vendor":"serenityos","product":"serenityos"}],"references":[{"url":"https://github.com/SerenityOS/serenity/issues/5317","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://github.com/SerenityOS/serenity/pull/5344","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://github.com/SerenityOS/serenity/commit/48fbf6a88d4822a1e5470cf08f29464511bd72c1","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","advisory","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-27343"},{"url":"https://github.com/advisories/GHSA-4v56-mrhv-6j2m"}],"sources":{"cve":[{"id":"CVE-2021-27343","description":"SerenityOS Unspecified is affected by: Buffer Overflow. The impact is: obtain sensitive information (context-dependent). The component is: /Userland/Libraries/LibCrypto/ASN1/DER.h Crypto::der_decode_sequence() function. The attack vector is: Parsing RSA Key ASN.1.","status":"published","published":"2021-04-06T12:07:12Z","modified":"2024-08-03T20:48:16.451Z","updated_at":"2026-11-02T14:33:04.360272Z"}],"euvd":[{"id":"EUVD-2021-14103","description":"SerenityOS Unspecified is affected by: Buffer Overflow. The impact is: obtain sensitive information (context-dependent). The component is: /Userland/Libraries/LibCrypto/ASN1/DER.h Crypto::der_decode_sequence() function. The attack vector is: Parsing RSA Key ASN.1.","status":"published","published":"2021-04-06T12:07:12Z","modified":"2024-08-03T20:48:16Z","updated_at":"2026-11-03T03:24:49.368497Z"}],"ghsa":[{"id":"GHSA-4v56-mrhv-6j2m","title":"SerenityOS Unspecified is affected by: Buffer Overflow. The impact is: obtain sensitive...","description":"SerenityOS Unspecified is affected by: Buffer Overflow. The impact is: obtain sensitive information (context-dependent). The component is: /Userland/Libraries/LibCrypto/ASN1/DER.h Crypto::der_decode_sequence() function. The attack vector is: Parsing RSA Key ASN.1.","status":"published","published":"2022-05-24T17:46:37Z","modified":"2023-02-02T05:02:53Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:51:31.853894Z"}],"nvd":[{"id":"CVE-2021-27343","description":"SerenityOS Unspecified is affected by: Buffer Overflow. The impact is: obtain sensitive information (context-dependent). The component is: /Userland/Libraries/LibCrypto/ASN1/DER.h Crypto::der_decode_sequence() function. The attack vector is: Parsing RSA Key ASN.1.","status":"published","published":"2021-04-06T13:15:14.2Z","modified":"2026-06-17T03:44:40.273Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:06:51.610648Z"}],"osv":[{"id":"CVE-2021-27343","description":"SerenityOS Unspecified is affected by: Buffer Overflow. The impact is: obtain sensitive information (context-dependent). The component is: /Userland/Libraries/LibCrypto/ASN1/DER.h Crypto::der_decode_sequence() function. The attack vector is: Parsing RSA Key ASN.1.","status":"published","published":"2021-04-06T13:15:14.2Z","modified":"2026-04-11T16:26:12.940352Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T15:44:18.778776Z"}]}}