{"id":"CVE-2023-27555","aliases":["EUVD-2023-31309","GHSA-8g4q-wj32-g8cw"],"status":"published","title":"IBM Db2 denial of service","description":"IBM Db2 for Linux, UNIX and Windows (includes DB2 Connect Server) 11.5 is vulnerable to a denial of service when attempting to use ACR client affinity for unfenced DRDA federation wrappers.  IBM X-Force ID:  249187.","severity":{"version":"3.1","score":5.1,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00599,"percentile":0.49017,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2023-04-28T17:38:59Z","modified":"2026-06-17T05:45:26Z","products":[{"vendor":"ibm","product":"db2"},{"vendor":"ibm","product":"db2 for linux, unix and windows"}],"references":[{"url":"https://www.ibm.com/support/pages/node/6985683","tags":["vendor-advisory","x_transferred","Patch","Vendor Advisory"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/249187","tags":["vdb-entry","x_transferred","VDB Entry","Vendor Advisory"]},{"url":"https://security.netapp.com/advisory/ntap-20230511-0010/","tags":["x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-27555"},{"url":"https://security.netapp.com/advisory/ntap-20230511-0010"},{"url":"https://github.com/advisories/GHSA-8g4q-wj32-g8cw"}],"sources":{"cve":[{"id":"CVE-2023-27555","title":"IBM Db2 denial of service","description":"IBM Db2 for Linux, UNIX and Windows (includes DB2 Connect Server) 11.5 is vulnerable to a denial of service when attempting to use ACR client affinity for unfenced DRDA federation wrappers.  IBM X-Force ID:  249187.","status":"published","published":"2023-04-28T17:38:59.623Z","modified":"2025-02-13T16:45:26.913Z","cvss":[{"version":"3.1","score":5.1,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:35:26.261013Z"}],"euvd":[{"id":"EUVD-2023-31309","description":"IBM Db2 for Linux, UNIX and Windows (includes DB2 Connect Server) 11.5 is vulnerable to a denial of service when attempting to use ACR client affinity for unfenced DRDA federation wrappers.  IBM X-Force ID:  249187.","status":"published","published":"2023-04-28T17:38:59Z","modified":"2025-02-13T16:45:26Z","cvss":[{"version":"3.1","score":5.1,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-03T00:03:50.947767Z"}],"ghsa":[{"id":"GHSA-8g4q-wj32-g8cw","title":"IBM Db2 for Linux, UNIX and Windows (includes DB2 Connect Server) 11.5 is vulnerable to a denial...","description":"IBM Db2 for Linux, UNIX and Windows (includes DB2 Connect Server) 11.5 is vulnerable to a denial of service when attempting to use ACR client affinity for unfenced DRDA federation wrappers.  IBM X-Force ID:  249187.","status":"published","published":"2023-04-28T18:30:21Z","modified":"2024-04-04T03:43:54Z","cvss":[{"version":"3.1","score":5.1,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:56:17.471503Z"}],"nvd":[{"id":"CVE-2023-27555","description":"IBM Db2 for Linux, UNIX and Windows (includes DB2 Connect Server) 11.5 is vulnerable to a denial of service when attempting to use ACR client affinity for unfenced DRDA federation wrappers.  IBM X-Force ID:  249187.","status":"published","published":"2023-04-28T18:15:26.25Z","modified":"2026-06-17T05:45:26.803Z","cvss":[{"version":"3.1","score":5.1,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:07:59.151142Z"}]}}