CVE-2026-7827

Status: DeferredCritical (9.2)—

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.

CVSS

Version: 4.0
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Base score: 9.2

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.58%
Percentile among all scored CVEs: 47
Score date: 10/14/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

🎯 ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

ExploitationT1190 Exploit Public-Facing Applicationinitial access85 %
Primary impactT1059 Command and Scripting Interpreterexecution80 %
Secondary impactT1499.004 Application or System Exploitationimpact75 %

Desbordamiento de búfer en decodificador RDB remoto sin autenticación requerida (AV:N, PR:N); permite ejecución de código arbitrario o DoS mediante flujo RDB malformado con propiedad entity count no validada.

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

🛡️ ATT&CK mitigations that cover these techniques

Privileged Account Management Filter Network Traffic Vulnerability Scanning Restrict Web-Based Content Network Segmentation Limit Software Installation

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Falkordb — Falkordb^AI

CWEs

CWE-121

References

Raw JSON (NVD)

Show

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          "modules": [
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          "programFiles": [
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            "src/serializers/decoders/prev/v18/decode_graph_entities.c",
            "src/serializers/decoders/prev/v17/decode_graph_entities.c",
            "src/serializers/decoders/prev/v16/decode_graph_entities.c",
            "src/serializers/decoders/prev/v15/decode_graph_entities.c",
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  "published": "2026-10-09T05:16:45.327",
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      "url": "https://github.com/FalkorDB/FalkorDB/commit/7d15431aadf37588fadc2578b90c3afb5e8daa94",
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      "value": "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."
    }
  ],
  "lastModified": "2026-10-09T17:16:50.163",
  "sourceIdentifier": "33c584b5-0579-4c06-b2a0-8d8329fcab9c"
}