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TI-2026-69849 Aliases CVE-2026-7827

Stack-based buffer overflow in FalkorDB RDB entity decoding

Priority MEDIUM 42CWE-121Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-121 and the CVSS impact.

Summary

FalkorDB before 4.18.4 contains a stack-based buffer overflow in the _RdbLoadEntity function that decodes RDB graph entities (CWE-121). The entity property count from the RDB stream is not bounded and sizes two stack arrays, which the decoder then fills with attacker-supplied values. A remote attacker who can issue Redis replication commands, such as on an instance with no password, can cause a denial of service and possibly run arbitrary code with a crafted RDB stream.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00584 48th percentileScored 2026-11-07
Fix Fixed FalkorDB (FalkorDB): 4.18.4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
FalkorDBFalkorDBbefore 4.18.44.18.4Patch availableCNA
  • FalkorDB VendorFalkorDB Affected before 4.18.4 Fixed in 4.18.4 Patch available CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:a:falkordb:falkordb:*:*:*:*:*:*:*:*——FalkorDB
  • cpe:2.3:a:falkordb:falkordb:*:*:*:*:*:*:*:* Versions — — ·FalkorDB

Remediation

Upgrade FalkorDB to version 4.18.4, the fixed version.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA FalkorDB (FalkorDB) Fixed in 4.18.4

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    FalkorDB 4.18.4

    2 records Highest priority Priority MEDIUM 2 MEDIUM

    Other records, highest priority first

    • TI-2026-69848 Heap out-of-bounds read in FalkorDB via crafted RDB streamPriority MEDIUM 44
    Show all 2 records →

Timeline

  1. 2026-10-09 Threatist record created from CVE-2026-7827
  2. 2026-10-10 CISA SSVC decision points changed
  3. 2026-10-10 Priority changed: MEDIUM → LOW
  4. 2026-10-10 Priority changed: LOW → MEDIUM

References

Patch 2

Other 1

  • TI-2026-05312 Unauthenticated Path Traversal in FalkorDB Browser Leads to Remote Code Execution CVSS 3.1CRITICAL 9.8
  • TI-2026-69850 Heap out-of-bounds write in FalkorDB Bolt RESET handler CVSS 4.0CRITICAL 9.3
  • TI-2026-69847 Double free and use-after-free in FalkorDB RDB loading CVSS 4.0CRITICAL 9.3
  • TI-2026-69851 Out-of-bounds write in FalkorDB Bolt WebSocket frame handling CVSS 4.0HIGH 8.8
  • TI-2026-08883 QueryWeaver Authentication Bypass via Email Signup Token Issuance for Existing Accounts CVSS 4.0HIGH 8.8
  • TI-2026-69848 Heap out-of-bounds read in FalkorDB via crafted RDB stream CVSS 4.0HIGH 8.8
See all 8 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences