HIGH 7.5 Microsoft
CVE-2026-57585
MessagePack: Out-of-bounds read/crash on Unpacker reuse after caught error
Microsoft Security Update 2026-Jun: MessagePack: Out-of-bounds read/crash on Unpacker reuse after caught error
Affected Products
- azl3 python-msgpack 1.0.5-2 on Azure Linux 3.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57585
- https://nvd.nist.gov/vuln/detail/CVE-2026-57585
This high severity vulnerability with a CVSS score of 7.5 was published on 2026-06-09 via Microsoft. Affected: azl3 python-msgpack 1.0.5-2 on Azure Linux 3.0.
vulnfeed aggregates 11102 vulnerabilities from NVD, CISA KEV,
Ubuntu, Debian, Red Hat, Kubernetes, Exploit-DB, OSS-Security, GitHub and OpenStack — updated every 4 hours.