{"id":"CVE-2026-90557","summary":"Freeciv 3.1.0 through 3.2.5 Out-of-Bounds Read via Savegame","details":"Freeciv versions 3.1.0 through 3.2.5 contain an out-of-bounds read vulnerability in sg_load_player_unit() when processing savegame files with invalid unit activity indices. An attacker can craft a malicious savegame file with an out-of-range activity index that bypasses bounds checking and causes a crash or limited heap memory exposure when loaded.","modified":"2026-09-14T03:46:32.752035847Z","published":"2026-09-12T18:06:41.706Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-125"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90557.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90557.json"},{"type":"ADVISORY","url":"https://github.com/freeciv/freeciv/releases/tag/R3_2_6"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90557"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/freeciv-3.1.0-through-3.2.5-out-of-bounds-read-via-savegame"},{"type":"REPORT","url":"https://redmine.freeciv.org/issues/2162"},{"type":"FIX","url":"https://github.com/freeciv/freeciv/commit/ef0c76c2765fe383140eb1a70dbea1228844152e"},{"type":"PACKAGE","url":"https://github.com/freeciv/freeciv"},{"type":"ARTICLE","url":"https://github.com/freeciv/freeciv/blob/R3_2_5/server/savegame/savegame2.c#L4282"},{"type":"ARTICLE","url":"https://github.com/freeciv/freeciv/blob/R3_2_5/server/savegame/savegame3.c#L6108"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/freeciv/freeciv","events":[{"introduced":"fb42aab19c905043535a2724530b1663296d1094"},{"fixed":"2c4304c742aa81f1d73a5d604ed83237d57804a1"}],"database_specific":{"extracted_events":[{"introduced":"3.1.0"},{"fixed":"3.2.6"}],"source":"AFFECTED_FIELD"}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90557.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N"}]}