{"apiVersion":"1.0","identifier":"CVE-2026-49420","description":"The RTSP handler in libalias rewrote outgoing packets into a fixed-length stack buffer without checking whether the rewritten data fit in the buffer, or whether the result fit back in the original packet. A host sending crafted RTSP traffic from inside a NAT gateway using libalias can overflow a stack buffer, potentially achieving remote code execution in the kernel (when using ipfw(4) NAT) or in the natd(8) process (which generally runs as the root user).","publishedAt":"2026-08-19T06:17:40","lastModifiedAt":"2026-08-26T16:54:50","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-49420","cvssScore":8.8,"cvssVector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","epssProbability":0.00274,"riskScore":0.9,"affectedProduct":"libalias","affectedVersions":"unknown","vulnerabilityType":"Kernel","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-49420","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-49420","en":"https://www.redsauce.net/en/cves/CVE-2026-49420","fr":"https://www.redsauce.net/fr/cves/CVE-2026-49420","pt":"https://www.redsauce.net/pt/cves/CVE-2026-49420","de":"https://www.redsauce.net/de/cves/CVE-2026-49420","sk":"https://www.redsauce.net/sk/cves/CVE-2026-49420","el":"https://www.redsauce.net/el/cves/CVE-2026-49420"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-49420"}}