{"schemaVersion":3,"id":"USN-8123-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"mbedtls vulnerabilities\n\nIt was discovered that Mbed TLS incorrectly handled memory allocation\nfailures. A remote attacker could possibly use this issue to crash\nthe program. This issue only affected Ubuntu 18.04 LTS and Ubuntu\n20.04 LTS. (CVE-2021-44732)\n\nJonathan Winzig discovered that Mbed TLS incorrectly handled crafted\ninputs. A remote attacker could possibly use this issue to crash the\nprogram, resulting in a denial of service. This issue only affected\nUbuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS. (CVE-2024-23775)\n\nIt was discovered that Mbed TLS incorrectly handled the TLS\nhandshake. A remote attacker could possibly use this issue to\nbreak the security guarantees of the TLS handshake.\n(CVE-2025-27810)\n\nLinh Le and Ngan Nguyen discovered that Mbed TLS incorrectly\ndocumented the behavior of a function. Application code relying\non the documented behavior might be affected. A remote attacker\ncould possibly use this issue to execute arbitrary code.\n(CVE-2025-47917)\n\nLinh Le and Ngan Nguyen discovered that Mbed TLS incorrectly handled\ncrafted input. A remote attacker could possibly use this issue to\ncrash the program, resulting in a denial of service. (CVE-2025-48965)\n\nIt was discovered that Mbed TLS incorrectly handled a race condition.\nAn attacker could possibly use this issue to extract AES keys.\n(CVE-2025-52496)\n\nLinh Le and Ngan Nguyen discovered that Mbed TLS incorrectly handled\ncertain invalid input. A remote attacker could possibly use this\nissue to crash the program, resulting in a denial of service.\n(CVE-2025-52497)","dates":{"published":"2026-03-25T16:22:11.000Z","modified":"2026-04-27T18:44:30.297Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":null,"severity":"unknown","version":null,"versionLabel":null,"source":null,"vector":null,"computed":false,"selection":"none"},"metrics":[]},"epss":{"probability":null,"percentile":null,"severity":"unknown","asOf":null,"change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[],"last30":[]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[],"affected":[{"vendor":"ubuntu","product":"mbedtls","name":"mbedtls","label":"mbedtls","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/mbedtls","purlType":"deb","versions":[{"text":"< 2.8.0-1ubuntu0.1~esm1","noFixRecorded":false,"fixedIn":null},{"text":"< 2.16.4-1ubuntu2+esm1","noFixRecorded":false,"fixedIn":null},{"text":"< 2.28.0-1ubuntu0.1~esm1","noFixRecorded":false,"fixedIn":null},{"text":"< 2.28.8-1ubuntu0.1~esm1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2.8.0-1ubuntu0.1~esm1 | < 2.16.4-1ubuntu2+esm1 | < 2.28.0-1ubuntu0.1~esm1 | < 2.28.8-1ubuntu0.1~esm1","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-8123-1","label":"ubuntu.com/security/notices/USN-8123-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2021-44732","label":"ubuntu.com/security/CVE-2021-44732","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2024-23775","label":"ubuntu.com/security/CVE-2024-23775","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2025-27810","label":"ubuntu.com/security/CVE-2025-27810","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2025-47917","label":"ubuntu.com/security/CVE-2025-47917","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2025-48965","label":"ubuntu.com/security/CVE-2025-48965","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2025-52496","label":"ubuntu.com/security/CVE-2025-52496","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2025-52497","label":"ubuntu.com/security/CVE-2025-52497","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2021-44732","CVE-2024-23775","CVE-2025-27810","CVE-2025-47917","CVE-2025-48965","CVE-2025-52496","CVE-2025-52497"],"downstream":[],"duplicates":[],"related":["CVE-2021-44732","CVE-2024-23775","CVE-2025-27810","CVE-2025-47917","CVE-2025-48965","CVE-2025-52496","CVE-2025-52497"]},"timeline":[{"kind":"published","date":"2026-03-25T16:22:11.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-04-27T18:44:30.297Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":0,"level":"minimal","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T06:27:24.668Z","stale":false,"partial":false}}