redis-server RESTORE invalid memory access may allow remote code execution
redis · redis
Redis is an in-memory data structure store. In versions of redis-server up to 8.6.3, the RESTORE command does not properly validate serialized values. An authenticated attacker with permission to execute RESTORE can supply a crafted serialized payload that triggers invalid memory access and may lead to remote code execution. A workaround is to restrict access to the RESTORE command with ACL rules. This is patched in version 8.6.3.
- Exploited
- Yes, in VulnCheck KEV
- Reports
- 0
- Tactics
- 0/15
Exploitation timelineDated milestones for a CVE: when it was disclosed, when exploit code became public, when exploitation was confirmed, and when threat reports named it.
First seen exploited 5 months after disclosure. Public exploit code (PoC-in-GitHub) appeared 39 days after disclosure.
- Disclosedday 0
- Public exploit codePoC-in-GitHub+39 days
- First seen exploitedVulnCheck KEV evidence+5 mo
Patch historyEarlier and later CVEs in the same code, in date order. It shows when a fix was bypassed or incomplete and which version finally fixed it.
A fix was bypassed or incomplete once over 3 months.
Linked vulnerabilitiesLinked by evidence that a fix failed or the same code was patched again. Oldest first.
- This CVECVE-2026-25243redis-server RESTORE invalid memory access may allow remote code…5 May 2026
incomplete fixHigh
Why these are linked: Link confidenceHow strong the evidence is that two CVEs are related. High: stated in the CVE text or linked in an advisory, or the same code was patched one release apart. Medium: the same code, or a version step plus a similar description. Low: similar description only.
- Stated in the CVE text
NOTE: this issue exists because of an incomplete fix for CVE-2026-25243.
- Stated in the CVE text
MITRE ATT&CKA public catalogue of the techniques attackers use, maintained by MITRE. Patchfirst uses it to describe what attackers do with a vulnerability. techniques
No techniques linkedNo ATT&CK techniques are linked to this CVE yet. MITRE CTID has not mapped it, and no report passage in the corpus ties it to a technique.
What security researchers reported
Not named in any threat report yetAlso mentioned in 10 community threat pulses (AlienVault OTX)
Weaker evidencePulses are indicator collections that anyone can publish. A mention is not confirmation of exploitation.
- Debian Patches Multiple Redis Flaws Allowing Denial of Service and Arbitrary Code Execution2 Oct 2026
- Redis Authenticated RCE via RESTORE (Streams UAF / RedisBloom TDigest) — July 202627 Jul 2026
- Known_Cve | May 14, 2026 | Part 1/213 May 2026
- Known_Cve | May 13, 2026 | Part 1/212 May 2026
- Known_Cve | May 12, 202611 May 2026
- Known_Cve | May 11, 202610 May 2026
- 4 more on OTX