CVE-2026-7827
Stack-based buffer overflow in FalkorDB _RdbLoadEntity via unbounded property count in crafted RDB
- State
- Published
- Severity
- 9.2 Critical
- Published
- Oct 9, 2026
- Updated
- Oct 9, 2026
- Reserved
- May 5, 2026
Description
A stack-based buffer overflow in the _RdbLoadEntity function of the RDB graph decoders (src/serializers/decoders/*/decode_graph_entities.c) in FalkorDB before 4.18.4 allows a remote attacker who can issue Redis replication commands (for example, against an instance with no password configured) to cause a denial of service and possibly execute arbitrary code by supplying a crafted RDB stream with an attacker-controlled entity property count. The count sizes two variable-length arrays on the thread stack with no upper bound, and the decoder then fills them with attacker-supplied values.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.2 Critical | CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | securin |
| 3.1 | 8.1 High | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H | securin |
Weaknesses
- CWE-121 Stack-based Buffer Overflow
Affected Products
| Product | Versions |
|---|---|
FalkorDBFalkorDB |
|
References
- FalkorDB PR #1973patch
- Fix commitpatch
- FalkorDB 4.18.4 release notesrelease-notes
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