UNKNOWN Microsoft
CVE-2026-63384
Libevent: `evtag_unmarshal_header()` decodes a wire `uint32` length into a signed `int` return value.
Microsoft Security Update 2026-Aug: Libevent: `evtag_unmarshal_header()` decodes a wire `uint32` length into a signed `int` return value.
Affected Products
- azl3 mysql 8.0.46-1 on Azure Linux 3.0
- azl3 openmpi 4.1.9a1-3 on Azure Linux 3.0
- azl3 libevent 2.1.12-1 on Azure Linux 3.0
- azl3 fluent-bit 3.1.10-6 on Azure Linux 3.0
- azl3 lldpd 1.0.22-1 on Azure Linux 3.0
- azl3 ntp 4.2.8p17-2 on Azure Linux 3.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-63384
- https://nvd.nist.gov/vuln/detail/CVE-2026-63384
This unknown severity vulnerability was published on 2026-08-11 via Microsoft. Affected: azl3 mysql 8.0.46-1 on Azure Linux 3.0, azl3 openmpi 4.1.9a1-3 on Azure Linux 3.0, azl3 libevent 2.1.12-1 on Azure Linux 3.0 and 3 more.
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