HIGH 7.5 Microsoft

CVE-2026-66373

Redis before 8.8.0, in the unusual case where an authenticated attacker can execute RESTORE, allows remote code execution via a RESTORE payload where the same NACK (pending entry) is referenced by more than one consumer, because deleting both consumers via XGROUP DELCONSUMER leads to a double free. NOTE: this issue exists because of an incomplete fix for CVE-2026-25243.

Microsoft Security Update 2026-Jul: Redis before 8.8.0, in the unusual case where an authenticated attacker can execute RESTORE, allows remote code execution via a RESTORE payload where the same NACK (pending entry) is referenced by more than one consumer, because deleting both consumers via XGROUP DELCONSUMER leads to a double free. NOTE: this issue exists because of an incomplete fix for CVE-2026-25243.

Affected Products

References

Published: 2026-07-14 · Source: Microsoft · Feed updated: 2026-08-04
This high severity vulnerability with a CVSS score of 7.5 was published on 2026-07-14 via Microsoft. Affected: azl3 valkey 8.0.9-1 on Azure Linux 3.0.
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