{"cve":"CVE-2020-27827","nvd":{"published":"2021-03-18T17:15:13.510","modified":"2026-06-17T03:09:41.710","status":"Modified","description":"A flaw was found in multiple versions of OpenvSwitch. Specially crafted LLDP packets can cause memory to be lost when allocating data to handle specific optional TLVs, potentially causing a denial of service. The highest threat from this vulnerability is to system availability.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-400"],"references":["https://bugzilla.redhat.com/show_bug.cgi?id=1921438","https://cert-portal.siemens.com/productcert/pdf/ssa-941426.pdf","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3T5XHPOGIPWCRRPJUE6P3HVC5PTSD5JS/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JYA4AMJXCNF6UPFG36L2TPPT32C242SP/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SKQWHG2SZJZSGC7PXVDAEJYBN7ESDR7D/"],"products":["fedoraproject:fedora","lldpd_project:lldpd","openvswitch:openvswitch","redhat:enterprise_linux","redhat:openshift_container_platform","redhat:openstack","redhat:virtualization","siemens:simatic_hmi_unified_comfort_panels_firmware","siemens:simatic_net_cp_1243-1_firmware","siemens:simatic_net_cp_1243-8_irc_firmware","siemens:simatic_net_cp_1542sp-1_firmware","siemens:simatic_net_cp_1542sp-1_irc_firmware","siemens:simatic_net_cp_1543-1_firmware","siemens:simatic_net_cp_1543sp-1_firmware","siemens:simatic_net_cp_1545-1_firmware","siemens:sinumerik_one_firmware","siemens:tim_1531_irc_firmware"],"source":"nvd","synced_at":"2026-10-19T21:15:50.279857260+00:00"},"epss":{"cve":"CVE-2020-27827","score":0.03235,"percentile":0.88276,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}