High severity · published Jul 25, 2026
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)…
7.5
CVSS
0.9%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 59% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RE
Redis · Redis
before 8.8.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-66373
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-66373
github.com
https://github.com/berabuddies/redis-poc
github.com
https://github.com/redis/redis/compare/8.6.4...8.8.0
github.com
https://github.com/redis/redis/pull/15081
news.ycombinator.com
https://news.ycombinator.com/item?id=49024938
x.com
https://x.com/Fried_rice/status/2080059356322918777
lists.debian.org
https://lists.debian.org/debian-lts-announce/2026/08/msg00012.html
More from Redis
10.0
CVE-2022-0543
Debian-specific Redis Server Lua Sandbox Escape Vulnerability
9.9
CVE-2025-49844
Redis is an open source, in-memory database that persists on disk
9.8
CVE-2025-27151
Redis is an open source, in-memory database that persists on disk
9.8
CVE-2024-46981
Redis' Lua library commands may lead to remote code execution
9.8
CVE-2022-3734
Redis on Windows dbghelp.dll uncontrolled search path