{"id":"CVE-2020-28895","aliases":["EUVD-2020-21286","GHSA-5wmw-m5w7-7m5m"],"status":"published","title":"integer overflow in calloc","description":"In Wind River VxWorks, memory allocator has a possible overflow in calculating the memory block's size to be allocated by calloc(). As a result, the actual memory allocated is smaller than the buffer size specified by the arguments, leading to memory corruption.","severity":{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.01542,"percentile":0.75121,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-120","CWE-190","CWE-787"],"published":"2021-02-03T15:16:34Z","modified":"2026-06-17T03:10:47Z","products":[{"vendor":"oracle","product":"communications_eagle"},{"vendor":"windriver","product":"vxworks"}],"references":[{"url":"https://support2.windriver.com/index.php?page=defects\u0026on=view\u0026id=V7LIBC-1327","tags":["x_refsource_MISC","x_transferred","Permissions Required"]},{"url":"https://support2.windriver.com/index.php?page=cve\u0026on=view\u0026id=CVE-2020-28895","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://www.oracle.com/security-alerts/cpuapr2022.html","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-28895"},{"url":"https://github.com/advisories/GHSA-5wmw-m5w7-7m5m"}],"sources":{"cve":[{"id":"CVE-2020-28895","title":"integer overflow in calloc","description":"In Wind River VxWorks, memory allocator has a possible overflow in calculating the memory block's size to be allocated by calloc(). As a result, the actual memory allocated is smaller than the buffer size specified by the arguments, leading to memory corruption.","status":"published","published":"2021-02-03T15:16:34Z","modified":"2024-08-04T16:41:00.095Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high","assessor":"cna"}],"updated_at":"2026-11-02T14:35:57.017407Z"}],"euvd":[{"id":"EUVD-2020-21286","description":"In Wind River VxWorks, memory allocator has a possible overflow in calculating the memory block's size to be allocated by calloc(). As a result, the actual memory allocated is smaller than the buffer size specified by the arguments, leading to memory corruption.","status":"published","published":"2021-02-03T15:16:34Z","modified":"2024-08-04T16:41:00Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high"}],"updated_at":"2026-11-03T03:07:09.169254Z"}],"ghsa":[{"id":"GHSA-5wmw-m5w7-7m5m","title":"In Wind River VxWorks, memory allocator has a possible overflow in calculating the memory block's...","description":"In Wind River VxWorks, memory allocator has a possible overflow in calculating the memory block's size to be allocated by calloc(). As a result, the actual memory allocated is smaller than the buffer size specified by the arguments, leading to memory corruption.","status":"published","published":"2022-05-24T17:40:47Z","modified":"2023-01-29T05:05:34Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high"}],"cwes":["CWE-120","CWE-787"],"updated_at":"2026-11-02T14:45:49.336023Z"}],"nvd":[{"id":"CVE-2020-28895","description":"In Wind River VxWorks, memory allocator has a possible overflow in calculating the memory block's size to be allocated by calloc(). As a result, the actual memory allocated is smaller than the buffer size specified by the arguments, leading to memory corruption.","status":"published","published":"2021-02-03T16:15:13.633Z","modified":"2026-06-17T03:10:47.207Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high","assessor":"secondary"},{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-190","CWE-787"],"updated_at":"2026-11-02T14:06:34.188486Z"}]}}