{"id":"CVE-2009-2620","aliases":["EUVD-2009-2615","GHSA-rp94-92gp-7q47"],"status":"published","title":"src/remote/server.cpp in fbserver.exe in Firebird SQL 1.5 before 1.5.6, 2.0 before 2.0.6, 2.1...","description":"src/remote/server.cpp in fbserver.exe in Firebird SQL 1.5 before 1.5.6, 2.0 before 2.0.6, 2.1 before 2.1.3, and 2.5 before 2.5 Beta 2 allows remote attackers to cause a denial of service (daemon crash) via a malformed op_connect_request message that triggers an infinite loop or NULL pointer dereference.","severity":{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.08631,"percentile":0.95139,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-20"],"published":"2009-07-29T17:00:00Z","modified":"2026-06-16T23:09:51Z","exploits":[{"source":"exploitdb","id":"EDB-9295","title":"Firebird SQL - op_connect_request main listener shutdown","type":"dos","platform":"windows","date":"2009-07-28","verified":true,"url":"https://www.exploit-db.com/exploits/9295"}],"products":[{"vendor":"firebirdsql","product":"firebird"}],"references":[{"url":"http://www.securityfocus.com/bid/35842","tags":["vdb-entry","x_refsource_BID","x_transferred","Exploit","Patch"]},{"url":"https://www.redhat.com/archives/fedora-package-announce/2009-August/msg01341.html","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","Broken Link"]},{"url":"http://www.coresecurity.com/content/firebird-sql-dos","tags":["x_refsource_MISC","x_transferred","Exploit"]},{"url":"http://www.exploit-db.com/exploits/9295","tags":["exploit","x_refsource_EXPLOIT-DB","x_transferred","Exploit"]},{"url":"https://www.redhat.com/archives/fedora-package-announce/2009-August/msg01370.html","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","Broken Link"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=514463","tags":["x_refsource_CONFIRM","x_transferred","Issue Tracking"]},{"url":"http://tracker.firebirdsql.org/browse/CORE-2563","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2009-2620"},{"url":"https://github.com/advisories/GHSA-rp94-92gp-7q47"}],"sources":{"cve":[{"id":"CVE-2009-2620","description":"src/remote/server.cpp in fbserver.exe in Firebird SQL 1.5 before 1.5.6, 2.0 before 2.0.6, 2.1 before 2.1.3, and 2.5 before 2.5 Beta 2 allows remote attackers to cause a denial of service (daemon crash) via a malformed op_connect_request message that triggers an infinite loop or NULL pointer dereference.","status":"published","published":"2009-07-29T17:00:00Z","modified":"2024-08-07T05:59:55.735Z","updated_at":"2026-11-02T14:33:23.395558Z"}],"euvd":[{"id":"EUVD-2009-2615","description":"src/remote/server.cpp in fbserver.exe in Firebird SQL 1.5 before 1.5.6, 2.0 before 2.0.6, 2.1 before 2.1.3, and 2.5 before 2.5 Beta 2 allows remote attackers to cause a denial of service (daemon crash) via a malformed op_connect_request message that triggers an infinite loop or NULL pointer dereference.","status":"published","published":"2009-07-29T17:00:00Z","modified":"2024-08-07T05:59:55Z","updated_at":"2026-11-03T01:39:17.005545Z"}],"ghsa":[{"id":"GHSA-rp94-92gp-7q47","title":"src/remote/server.cpp in fbserver.exe in Firebird SQL 1.5 before 1.5.6, 2.0 before 2.0.6, 2.1...","description":"src/remote/server.cpp in fbserver.exe in Firebird SQL 1.5 before 1.5.6, 2.0 before 2.0.6, 2.1 before 2.1.3, and 2.5 before 2.5 Beta 2 allows remote attackers to cause a denial of service (daemon crash) via a malformed op_connect_request message that triggers an infinite loop or NULL pointer dereference.","status":"published","published":"2022-05-02T03:37:02Z","modified":"2023-01-31T05:08:24Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:49:23.788915Z"}],"nvd":[{"id":"CVE-2009-2620","description":"src/remote/server.cpp in fbserver.exe in Firebird SQL 1.5 before 1.5.6, 2.0 before 2.0.6, 2.1 before 2.1.3, and 2.5 before 2.5 Beta 2 allows remote attackers to cause a denial of service (daemon crash) via a malformed op_connect_request message that triggers an infinite loop or NULL pointer dereference.","status":"published","published":"2009-07-29T17:30:01.28Z","modified":"2026-06-16T23:09:51.347Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:01:36.200173Z"}]}}