A heap-based out-of-bounds read in the BufferSerializerIOv2_ReadBuffer function (src/serializers/serializer_io.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 or disclose heap memory by supplying a crafted RDB stream whose sub-buffer length field exceeds the remaining buffer size. The only bounds check is an ASSERT(), which is compiled out in release builds, so memcpy() reads past the end of the heap allocation.
Metrics
Affected Vendors & Products
References
History
Thu, 15 Oct 2026 17:30:00 +0000
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ssvc
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Fri, 09 Oct 2026 04:30:00 +0000
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| Description | A heap-based out-of-bounds read in the BufferSerializerIOv2_ReadBuffer function (src/serializers/serializer_io.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 or disclose heap memory by supplying a crafted RDB stream whose sub-buffer length field exceeds the remaining buffer size. The only bounds check is an ASSERT(), which is compiled out in release builds, so memcpy() reads past the end of the heap allocation. | |
| Title | Heap out-of-bounds read in FalkorDB BufferSerializerIOv2_ReadBuffer via crafted RDB | |
| First Time appeared |
Falkordb
Falkordb falkordb |
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| Weaknesses | CWE-125 | |
| CPEs | cpe:2.3:a:falkordb:falkordb:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Falkordb
Falkordb falkordb |
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| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: securin
Published: 2026-10-09T04:04:30.130Z
Updated: 2026-10-15T15:47:58.390Z
Reserved: 2026-05-05T02:50:40.051Z
Link: CVE-2026-7826
Updated: 2026-10-15T15:47:53.614Z
Status : Deferred
Published: 2026-10-09T05:16:45.150
Modified: 2026-10-15T16:18:21.737
Link: CVE-2026-7826
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