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.

Attack Vector Network

Attack Complexity High

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
FalkorDB FalkorDB unaffected
Version Status Constraints
0 affected < 4.18.4

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Project Subscriptions

Vendors Products
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Advisories

No advisories yet.

Fixes

Solution

Upgrade FalkorDB to version 4.18.4 or later.

Workaround

Require authentication on the Redis/FalkorDB instance (requirepass or ACLs), restrict or rename the REPLICAOF/SLAVEOF commands so untrusted clients cannot use them, and do not expose the instance to untrusted networks.

References
Link Providers
https://github.com/FalkorDB/FalkorDB/commit/7d15431aadf37588fadc2578b90c3afb5e8daa94 cve-icon cve-icon
https://github.com/FalkorDB/FalkorDB/pull/1973 cve-icon cve-icon
https://github.com/FalkorDB/FalkorDB/releases/tag/v4.18.4 cve-icon cve-icon
History

Fri, 09 Oct 2026 04:30:00 +0000

Type Values Removed Values Added
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.
Title Stack-based buffer overflow in FalkorDB _RdbLoadEntity via unbounded property count in crafted RDB
First Time appeared Falkordb
Falkordb falkordb
Weaknesses CWE-121
CPEs cpe:2.3:a:falkordb:falkordb:*:*:*:*:*:*:*:*
Vendors & Products Falkordb
Falkordb falkordb
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.2, 'vector': '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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: securin

Published:

Updated: 2026-10-09T04:04:29.094Z

Reserved: 2026-05-05T02:50:42.544Z

Link: CVE-2026-7827

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-10-09T05:16:45.327

Modified: 2026-10-09T05:16:45.447

Link: CVE-2026-7827

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-09T05:30:08Z

Weaknesses