CVE-2026-7826
A heap-based out-of-bounds read in the BufferSerializerIOv2_ReadBuffer function…
- Risk score
- 67/100
- CVSS
- 9.1 v3.1
- Exploit chance (30 days)
- 0.4%
- Published
- 9 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- 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 memo…
- Affected
- See advisory
- Fix
- Upgrade the product to 4.18.4 or later.
- Exploitation
- No known exploitation
Why it is Amber
- CVSS 9.1 critical
- Remotely exploitable without logging in
References
Original 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.
Last activity 9 Oct 2026. Patch Forecast updates every hour.