Remote denial of service via RESTORE integer overflow
Published Jun 25, 2026 · Updated Jun 25, 2026
Integer overflow in RESTORE in Apache Kvrocks 2.6.0 through 2.15.0 allows remote authenticated users to hang or terminate the server. The IntSet RDB parser calculates IntSetHeaderSize plus the declared entry count times the record size with 32-bit arithmetic, allowing the product to wrap and a header-only payload to pass its size check. Exploitation requires low-privilege access to issue RESTORE with a crafted int64 IntSet payload; parsing then reads beyond the input and hangs or terminates the process.
Summary
What happened
Integer overflow in RESTORE in Apache Kvrocks 2.6.0 through 2.15.0 allows remote authenticated users to hang or terminate the server. The IntSet RDB parser calculates IntSetHeaderSize plus the declared entry count times the record size with 32-bit arithmetic, allowing the product to wrap and a header-only payload to pass its size check. Exploitation requires low-privilege access to issue RESTORE with a crafted int64 IntSet payload; parsing then reads beyond the input and hangs or terminates the process.
The record
- CVE
- CVE-2026-54226
- Published
- Jun 25, 2026
- Updated
- Jun 25, 2026
- Vendor
- The Apache Software Foundation
- Product
- Apache Kvrocks
- Classifications
- CWE-190, T1499.004
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 25, 2026CVE publishedPublication date reported by the CVE source.
- Jun 25, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=2.6.0 <=2.15.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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