7.5

CVE-2020-27827: fedoraproject fedora Uncontrolled Resource Consumption

Modified
AliasesSUSE-SU-2021:0258-1SUSE-SU-2021:0276-1SUSE-SU-2021:0277-1
Published 18-03-2021Last modified 03-12-2025

Vulnerability summary

CVE-2020-27827 is a high (CVSS 7.5) Uncontrolled Resource Consumption vulnerability in fedoraproject fedora. EPSS estimates a 3.23% chance of exploitation in the next 30 days, higher than 88.2% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 7.5 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 3% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
3.23%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 12 · Related 1
DLA-2571-1DLA-3389-1DSA-4836-1RHSA-2021:0497RHSA-2021:0834RHSA-2021:0835

Timeline

  1. 18-03-2021
    PublishedVulnerability first disclosed.
  2. 03-12-2025
    Last modifiedVulnerability information updated.

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 metrics

7 scores · 6 sources · 2 versions

EPSS trend

Probability

3.23%

Chance of exploitation in the next 30 days

Percentile

88%

Versus all other CVEs

30-day change

No change 0.00 pp

From 3.23% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Suse36 products
  • openvswitch-dpdk&distro=SUSE Linux Enterprise Server 12 SP2-BCL< 2.5.11-25.26.1
  • openvswitch-dpdk&distro=SUSE Linux Enterprise Server 12 SP2-LTSS< 2.5.11-25.26.1
  • openvswitch-dpdk&distro=SUSE Linux Enterprise Server for SAP Applications 12 SP2< 2.5.11-25.26.1
  • openvswitch-dpdk&distro=SUSE OpenStack Cloud 7< 2.5.11-25.26.1
  • openvswitch&distro=HPE Helion OpenStack 8< 2.7.12-3.36.1
Siemens10 products
Redhat6 products
Alpine2 products
  • lldpd< 1.0.8-r0
  • openvswitch≥ 2.6.0, < 2.12.2-r0
Debian2 products
  • lldpd< 1.0.8-1
  • openvswitch< 2.15.0~git20210104.def6eb1ea+dfsg1-4
Opensuse2 products
  • openvswitch&distro=openSUSE Leap 15.2< 2.13.2-lp152.3.9.1
  • openvswitch&distro=openSUSE Tumbleweed< 2.14.2-11.3
Ubuntu2 products
  • lldpdAll versions (No fix recorded)
  • openvswitch< 2.5.9-0ubuntu0.16.04.2 | < 2.9.7-0ubuntu0.18.04.2 | < 2.13.1-0ubuntu0.20.04.3
Fedoraproject1 product
Lldpd_project1 product
Openvswitch1 product
  • openvswitch≥ 2.6.0, < 2.6.9 | ≥ 2.7.0, < 2.7.12 | ≥ 2.8.0, < 2.8.10 | ≥ 2.9.0, < 2.9.8 | ≥ 2.10.0, < 2.10.6 | ≥ 2.11.0, < 2.11.5 | ≥ 2.12.0, < 2.12.2 | ≥ 2.13.0, < 2.13.2 | ≥ 2.14.0, < 2.14.1

10 vendors · 63 products

References

39 links
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