{"id":"CVE-2020-15294","aliases":["EUVD-2020-7291","GHSA-mqrh-3j77-m2cw"],"status":"published","title":"Compiler Optimization Removal or Modification of Security-Critical Code vulnerability in Bitdefender Hypervisor Introspection (VA-9339)","description":"Compiler Optimization Removal or Modification of Security-critical Code vulnerability in IntPeParseUnwindData() results in multiple dereferences to the same pointer. If the pointer is located in memory-mapped from the guest space, this may cause a race-condition where the generated code would dereference the same address twice, thus obtaining different values, which may lead to arbitrary code execution. This issue affects: Bitdefender Hypervisor Introspection versions prior to 1.132.2.","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00302,"percentile":0.23115,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-733"],"published":"2020-12-17T16:50:18Z","modified":"2026-06-17T02:56:25Z","products":[{"vendor":"bitdefender","product":"hypervisor introspection"},{"vendor":"bitdefender","product":"hypervisor_introspection"}],"references":[{"url":"https://www.bitdefender.com/support/security-advisories/compiler-optimization-removal-modification-security-critical-code-vulnerability-bitdefender-hypervisor-introspection-va-9339/","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-15294"},{"url":"https://github.com/advisories/GHSA-mqrh-3j77-m2cw"}],"sources":{"cve":[{"id":"CVE-2020-15294","title":"Compiler Optimization Removal or Modification of Security-Critical Code vulnerability in Bitdefender Hypervisor Introspection (VA-9339)","description":"Compiler Optimization Removal or Modification of Security-critical Code vulnerability in IntPeParseUnwindData() results in multiple dereferences to the same pointer. If the pointer is located in memory-mapped from the guest space, this may cause a race-condition where the generated code would dereference the same address twice, thus obtaining different values, which may lead to arbitrary code execution. This issue affects: Bitdefender Hypervisor Introspection versions prior to 1.132.2.","status":"published","published":"2020-12-17T16:50:18.25Z","modified":"2024-09-16T19:40:28.161Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-733"],"updated_at":"2026-11-02T14:35:49.879248Z"}],"euvd":[{"id":"EUVD-2020-7291","description":"Compiler Optimization Removal or Modification of Security-critical Code vulnerability in IntPeParseUnwindData() results in multiple dereferences to the same pointer. If the pointer is located in memory-mapped from the guest space, this may cause a race-condition where the generated code would dereference the same address twice, thus obtaining different values, which may lead to arbitrary code execution. This issue affects: Bitdefender Hypervisor Introspection versions prior to 1.132.2.","status":"published","published":"2020-12-17T16:50:18Z","modified":"2024-09-16T19:40:28Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-03T00:55:20.992168Z"}],"ghsa":[{"id":"GHSA-mqrh-3j77-m2cw","title":"Compiler Optimization Removal or Modification of Security-critical Code vulnerability in...","description":"Compiler Optimization Removal or Modification of Security-critical Code vulnerability in IntPeParseUnwindData() results in multiple dereferences to the same pointer. If the pointer is located in memory-mapped from the guest space, this may cause a race-condition where the generated code would dereference the same address twice, thus obtaining different values, which may lead to arbitrary code execution. This issue affects: Bitdefender Hypervisor Introspection versions prior to 1.132.2.","status":"published","published":"2022-05-24T17:36:44Z","modified":"2023-01-29T05:05:04Z","updated_at":"2026-11-02T14:45:42.123832Z"}],"nvd":[{"id":"CVE-2020-15294","description":"Compiler Optimization Removal or Modification of Security-critical Code vulnerability in IntPeParseUnwindData() results in multiple dereferences to the same pointer. If the pointer is located in memory-mapped from the guest space, this may cause a race-condition where the generated code would dereference the same address twice, thus obtaining different values, which may lead to arbitrary code execution. This issue affects: Bitdefender Hypervisor Introspection versions prior to 1.132.2.","status":"published","published":"2020-12-17T17:15:12.987Z","modified":"2026-06-17T02:56:25.427Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":4.4,"vector":"AV:L/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-733"],"updated_at":"2026-11-02T14:06:27.73474Z"}]}}