CVSS 3.1
7.5 highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCVE-2020-27827
High (7.5). EPSS 3.2% chance of exploitation in the next 30 days.
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.
Severity
- EPSS
- 3.2% chance of exploitation in the next 30 days; higher than 88% of CVEs (scores of 2026-10-31)
- CWE
- CWE-400
- Published
- Modified
- Record from
- the NVD, synced
Affected
- 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
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/