{"id":"CVE-2026-16458","aliases":["EUVD-2026-57758","GHSA-pfwq-9x97-jv4q"],"status":"published","title":"Timing side-channel in RSA PKCS#1 v1.5 decryption in ocrypto","description":"Padding oracle attack vulnerability in Oberon microsystem AG’s ocrypto library in all versions since 3.0.0 and prior to 4.0.1 allows an attacker to recover plaintexts via timing measurements of RSA PKCS#1 v1.5 decrypt operations.","severity":{"version":"4.0","score":5.9,"vector":"CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00091,"percentile":0.00475,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-208","CWE-327"],"published":"2026-08-13T08:31:39Z","modified":"2026-10-23T19:10:00Z","products":[{"vendor":"oberon microsystems ag","product":"ocrypto"}],"references":[{"url":"https://www.oberon.ch/security-advisories/cve-2026-16458/"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-16458"},{"url":"https://www.oberon.ch/security-advisories/cve-2026-16458"},{"url":"https://github.com/advisories/GHSA-pfwq-9x97-jv4q"}],"sources":{"cve":[{"id":"CVE-2026-16458","title":"Timing side-channel in RSA PKCS#1 v1.5 decryption in ocrypto","description":"Padding oracle attack vulnerability in Oberon microsystem AG’s ocrypto library in all versions since 3.0.0 and prior to 4.0.1 allows an attacker to recover plaintexts via timing measurements of RSA PKCS#1 v1.5 decrypt operations.","status":"published","published":"2026-08-13T08:31:39.341Z","modified":"2026-08-13T14:26:09.348Z","cvss":[{"version":"4.0","score":5.9,"vector":"CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"}],"cwes":["CWE-208","CWE-327"],"updated_at":"2026-11-02T14:20:10.870108Z"}],"euvd":[{"id":"EUVD-2026-57758","description":"Padding oracle attack vulnerability in Oberon microsystem AG’s ocrypto library in all versions since 3.0.0 and prior to 4.0.1 allows an attacker to recover plaintexts via timing measurements of RSA PKCS#1 v1.5 decrypt operations.","status":"published","published":"2026-08-13T08:31:39Z","modified":"2026-08-13T14:26:09Z","cvss":[{"version":"4.0","score":5.9,"vector":"CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T18:01:56.761721Z"}],"ghsa":[{"id":"GHSA-pfwq-9x97-jv4q","title":"Padding oracle attack vulnerability in Oberon microsystem AG’s ocrypto library in all versions...","description":"Padding oracle attack vulnerability in Oberon microsystem AG’s ocrypto library in all versions since 3.0.0 and prior to 4.0.1 allows an attacker to recover plaintexts via timing measurements of RSA PKCS#1 v1.5 decrypt operations.","status":"published","published":"2026-08-13T09:31:10Z","modified":"2026-08-13T09:31:16Z","cvss":[{"version":"4.0","score":5.9,"vector":"CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"}],"cwes":["CWE-208"],"updated_at":"2026-11-02T15:10:24.70819Z"}],"nvd":[{"id":"CVE-2026-16458","description":"Padding oracle attack vulnerability in Oberon microsystem AG’s ocrypto library in all versions since 3.0.0 and prior to 4.0.1 allows an attacker to recover plaintexts via timing measurements of RSA PKCS#1 v1.5 decrypt operations.","status":"published","published":"2026-08-13T09:17:12.283Z","modified":"2026-10-23T19:10:00.167Z","cvss":[{"version":"4.0","score":5.9,"vector":"CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"}],"cwes":["CWE-208","CWE-327"],"updated_at":"2026-11-02T14:12:37.217486Z"}]}}