CVE-2026-90556Freeciv before 3.2.6 Heap Buffer Overflow via worklist_load
Updated under an hour ago ()
Does this affect you?
It affects freeciv. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
Freeciv versions before 3.2.6 contain a heap buffer overflow in worklist_load() when processing savegame files with declared worklist lengths exceeding the fixed array bound of 64 elements. Attackers can craft malicious savegame files that write past the entries array into adjacent heap-allocated struct fields, potentially corrupting memory when a user or server operator loads the file.
- CVSS
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-122
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Sep 18, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
freeciv freeciv freeciv:freeciv (from the name) | before 3.2.6 | CNA record |
References
- https://github.com/freeciv/freeciv/commit/75ecde3e86ddf2fe775768450e9a290a4f4d4387patch
- https://github.com/freeciv/freecivproduct
- https://redmine.freeciv.org/issues/2161issue-tracking
- https://github.com/freeciv/freeciv/blob/R3_2_5/server/savegame/savegame3.c#L964technical-description
- https://github.com/freeciv/freeciv/releases/tag/R3_2_6release-notes
- https://github.com/freeciv/freeciv/blob/R3_2_5/server/savegame/savegame2.c#L788technical-description
- https://www.vulncheck.com/advisories/freeciv-before-3.2.6-heap-buffer-overflow-via-worklist-loadthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.