CVE-2026-5066
- Source
- https://cve.org/CVERecord?id=CVE-2026-5066
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-5066.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-5066
- Aliases
-
- GHSA-wgrc-jrf6-24f3
- Published
- 2026-06-04T20:31:25.630Z
- Modified
- 2026-08-12T03:51:27.373059476Z
- Severity
-
- 6.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L CVSS Calculator
- Summary
- net: sockets: tls: Potential out-of-bounds write/read in socket_op_vtable::connect function
- Details
-
A potential out-of-bounds write/read exists in the TLS socket connect path of the network sockets subsystem (subsys/net/lib/sockets/socketstls.c). When the TLS session cache is enabled, tlssessionstore() and tlssessionrestore() memcpy the caller-supplied address into a fixed-size buffer using the caller-controlled addrlen value without validating it against the destination size. struct netsockaddr is an opaque type, so an application can pass an addrlen larger than sizeof(struct net_sockaddr) (for example 128 bytes into a 24-byte stack buffer), causing the memcpy to read and write past the end of the address memory used by the TLS session cache. This out-of-bounds write can lead to a crash and denial of service, and potentially to arbitrary code execution.
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/5xxx/CVE-2026-5066.json", "cwe_ids": [ "CWE-787" ], "cna_assigner": "zephyr" }- References