{"id":"AZL-94574","summary":"CVE-2026-70368 affecting package stunnel 5.74-1","details":"A stack-based out-of-bounds read vulnerability exists in the \"s_vlog\" function of stunnel, when handling oversized log messages via \"vsnprintf\". A remote attacker with network access to a stunnel service can send protocol inputs that trigger a log message longer than 1024 bytes, leading to an out-of-bounds stack read and a potential crash. In certain corner cases, the same vulnerability could be used to replace a series of trailing \"\\n\" characters with \"\\0\".","modified":"2026-08-31T05:26:27Z","published":"2026-08-04T14:16:32Z","upstream":["CVE-2026-70368"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-70368"}],"affected":[{"package":{"name":"stunnel","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/stunnel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"5.74-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-94574.json"}}],"schema_version":"1.9.0"}