Matthew Garrett discovered that libupnp mishandled POST requests by default. An attacker could use this vulnerability to write files to arbitrary locations in the victim's filesystem, possibly as root. (CVE-2016-6255)
It was discovered that libupnp mishandled certain input. A remote attacker could use this vulnerability to cause a denial of service (crash) or possibly execute arbitrary code. (CVE-2016-8863)
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