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Δ / VULNERABILITY RECORD

CVE-2026-63639.

Source-reported disclosure and enrichment record.

SEVERITY / CVSSHIGH / 8.8No severity score in this snapshot.
EXPLOITATION STATUSNot listed in the cached KEV catalogThis does not establish absence of exploitation.
RECORD STATUSMicrosoft vendor recordModified Aug 21, 2026

Disclosure summary

Valkey: UAF in stream deserialization may lead to remote code execution

Source-reported weakness categories

CWE-416

Source-specific records & product guidance

Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.

Microsoft Security Updates (CVRF) · 2026-Aug

Open original source · Updated Aug 21, 2026

Valkey: UAF in stream deserialization may lead to remote code execution

Maximum of vendor-reported product scores; products and fixed builds are associations, not a universal affected-version statement.

Microsoft maximum product score: 8.8

VendorProduct / associationVersion / bounds
Microsoft update guideazl3 valkey 8.0.10-1 on Azure Linux 3.0 (MSRC status code 3)

Original records & references

PUBLISHED 2026-08-21T10:03:26-04:00
MODIFIED 2026-08-21T10:03:26-04:00
INGESTED 2026-10-08T12:35:14-04:00