CVE & CISA-KEV Catalog

CVE-2020-27827

HIGHEPSS 87th pctl
7.5
CVSS v3
NVD

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.

How to fix

Remediation Available
lldpdDebian
Fixed in:1.0.8-1CVE-2020-27827
Fixed in:1.0.8-1CVE-2020-27827
Fixed in:1.0.8-1CVE-2020-27827
Fixed in:1.0.8-1CVE-2020-27827
lldpdRed Hat / RHEL
Fixed in:0:1.0.18-4.el9RHSA-2024:9158
Fixed in:0:1.0.18-4.el9RHSA-2024:9158
Fixed in:0:1.0.18-4.el9RHSA-2024:9158
Fixed in:0:1.0.18-4.el9RHSA-2024:9158
Fixed in:0:1.0.18-4.el9RHSA-2024:9158
Fixed in:0:1.0.18-4.el9RHSA-2024:9158
lldpdRocky
Fixed in:0:1.0.18-4.el9RHSA-2024:9158
Fixed in:0:1.0.18-4.el9RHSA-2024:9158
Fixed in:0:1.0.18-4.el9RHSA-2024:9158
Fixed in:0:1.0.18-4.el9RHSA-2024:9158
Fixed in:0:1.0.18-4.el9RHSA-2024:9158
Fixed in:0:1.0.18-4.el9RHSA-2024:9158
lldpd-debuginfoRocky
Fixed in:0:1.0.18-4.el9RHSA-2024:9158
Fixed in:0:1.0.18-4.el9RHSA-2024:9158
Fixed in:0:1.0.18-4.el9RHSA-2024:9158
Fixed in:0:1.0.18-4.el9RHSA-2024:9158
Fixed in:0:1.0.18-4.el9RHSA-2024:9158
lldpd-debuginfoRed Hat / RHEL
Fixed in:0:1.0.18-4.el9RHSA-2024:9158
Fixed in:0:1.0.18-4.el9RHSA-2024:9158
Fixed in:0:1.0.18-4.el9RHSA-2024:9158
Fixed in:0:1.0.18-4.el9RHSA-2024:9158
Fixed in:0:1.0.18-4.el9RHSA-2024:9158
lldpd-debugsourceRocky
Fixed in:0:1.0.18-4.el9RHSA-2024:9158
Fixed in:0:1.0.18-4.el9RHSA-2024:9158
Fixed in:0:1.0.18-4.el9RHSA-2024:9158
Fixed in:0:1.0.18-4.el9RHSA-2024:9158
Fixed in:0:1.0.18-4.el9RHSA-2024:9158
lldpd-debugsourceRed Hat / RHEL
Fixed in:0:1.0.18-4.el9RHSA-2024:9158
Fixed in:0:1.0.18-4.el9RHSA-2024:9158
Fixed in:0:1.0.18-4.el9RHSA-2024:9158
Fixed in:0:1.0.18-4.el9RHSA-2024:9158
Fixed in:0:1.0.18-4.el9RHSA-2024:9158
lldpd-develRocky
Fixed in:0:1.0.18-4.el9RHSA-2024:9158
Fixed in:0:1.0.18-4.el9RHSA-2024:9158
Fixed in:0:1.0.18-4.el9RHSA-2024:9158
Fixed in:0:1.0.18-4.el9RHSA-2024:9158
Fixed in:0:1.0.18-4.el9RHSA-2024:9158
lldpd-develRed Hat / RHEL
Fixed in:0:1.0.18-4.el9RHSA-2024:9158
Fixed in:0:1.0.18-4.el9RHSA-2024:9158
Fixed in:0:1.0.18-4.el9RHSA-2024:9158
Fixed in:0:1.0.18-4.el9RHSA-2024:9158
Fixed in:0:1.0.18-4.el9RHSA-2024:9158
openvswitchUbuntu
Fixed in:2.5.9-0ubuntu0.16.04.2USN-4691-1
Fixed in:2.9.7-0ubuntu0.18.04.2USN-4691-1
Fixed in:2.13.1-0ubuntu0.20.04.3USN-4691-1
openvswitch-commonUbuntu
Fixed in:2.5.9-0ubuntu0.16.04.2USN-4691-1
Fixed in:2.9.7-0ubuntu0.18.04.2USN-4691-1
Fixed in:2.13.1-0ubuntu0.20.04.3USN-4691-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityNone
AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

3.23%probability of exploitation in 30 days
87thpercentile

Elevated risk: more likely to be exploited than 87% of all known CVEs.

References

Related Vulnerabilities

Other CWE-400 (Resource Exhaustion) vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2023-44487High7.5100%KEVFix
CVE-2021-44228Critical10.0100%KEV + RansomFix
CVE-2011-3192High7.899%-Fix
CVE-2019-11478Medium5.395%-Fix
CVE-2024-25617Medium5.389%-Fix
CVE-2018-1000115High7.589%-Fix
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CVE-2020-27827 severity badge

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-12-03.