CVE-2026-66373

7.5 highEPSS 0.9%

High (7.5). EPSS 0.9% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

7.5 high

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.9% chance of exploitation in the next 30 days; higher than 58% of CVEs (scores of 2026-10-31)
CWE: CWE-415
Published: 2026-07-25
Modified: 2026-09-09
Record from: the NVD, synced 2026-10-19

References

https://github.com/berabuddies/redis-poc
https://github.com/redis/redis/compare/8.6.4...8.8.0
https://github.com/redis/redis/pull/15081
https://news.ycombinator.com/item?id=49024938
https://x.com/Fried_rice/status/2080059356322918777

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