Critical · CVSS 9.2CVE-2026-7827

Stack-based buffer overflow in FalkorDB _RdbLoadEntity via unbounded property count in crafted RDBCVE-2026-7827

Answer in brief

CVE-2026-7827 records a Critical severity (CVSS 9.2) vulnerability in Stack-based buffer overflow in FalkorDB _RdbLoadEntity via unbounded property count in crafted RDB. The current sources do not mark it as known exploited. The current feed maps FalkorDB/FalkorDB (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 9, 2026Updated Oct 9, 2026Source checked Oct 9, 2026First seen by HOL Oct 9, 2026Material review Oct 9, 2026

Upstream Advisory

Key facts

Risk: Critical · CVSS 9.2
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 9.2. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps FalkorDB/FalkorDB (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
FalkorDB/FalkorDBgeneric	>=0 <4.18.4	4.18.4

Recommended response

Check inventory. Check lockfiles and deployed manifests for FalkorDB/FalkorDB.
Review the reported fix. Source-reported solution: Upgrade FalkorDB to version 4.18.4 or later.

Evidence timeline and material changes

Published upstream
Oct 9, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Oct 9, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Oct 9, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.