Integer overflow in Valkey

CVE-2025-49112

setDeferredReply in networking.c in Valkey through 8.1.1 has an integer underflow for prev->size - prev->used.

EPSS: 0.002 (10.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.1 (Low). Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

Valkey — versions 0

Weakness classification (CWE)

CWE-191 — Integer Underflow

References

Frequently asked questions

What is CVE-2025-49112?: CVE-2025-49112 is a low-severity vulnerability in Valkey, classified under Integer Underflow. CVSS score: 3.1/10. Published 2025-06-02.
How severe is CVE-2025-49112?: Low severity. CVSS v3 base score is 3.1 out of 10.