CVE-2021-26111

lowpriority · track · 26EPSS 0.004 · 32 %ileEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.38% (32nd) EPSS

CVSS 3.3 · low

Is it mine?

8 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-27

A missing release of memory after effective lifetime vulnerability in FortiSwitch 6.4.0 to 6.4.6, 6.2.0 to 6.2.6, 6.0.0 to 6.0.6, 3.6.11 and below may allow an attacker on an adjacent network to exhaust available memory by sending specifically crafted LLDP/CDP/EDP packets to the device.

cvss

Technical severity, 0–10. One row per scoring source.

6.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 3.3–6.5

v2.03.3lowAV:A/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 6.5 · impact 2.9

v3.16.5mediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 3.6

v3.16.5mediumAV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

v3.16.5mediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · ENISA EU

v3.16.5mediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · psirt@fortinet.comexploitability 2.8 · impact 3.6

v3.16mediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-401USprimaryCWE-401US

affected products (8)

Products and version ranges known to be affected.

Fortinet Fortinet FortiSwitch≤ FortiSwitch 6.4.0 to 6.4.6, 6.2.0 to 6.2.6, 6.0.0 to 6.0.6, 3.6.11 and belowenisa_euvdEU
Fortinet Inc. FortiSwitch6.0.0 → 6.0.7fstec_bduRU
Fortinet Inc. FortiSwitch6.2.0 → 6.2.6fstec_bduRU
Fortinet Inc. FortiSwitch6.4.0 → 6.4.6fstec_bduRU
fortinet fortiswitch≤ 3.6.11nvdUScpe:2.3:o:fortinet:fortiswitch:*:*:*:*:*:*:*:*
fortinet fortiswitch6.0.0 → 6.0.6nvdUScpe:2.3:o:fortinet:fortiswitch:*:*:*:*:*:*:*:*
fortinet fortiswitch6.2.0 → 6.2.6nvdUScpe:2.3:o:fortinet:fortiswitch:*:*:*:*:*:*:*:*
fortinet fortiswitch6.4.0 → 6.4.6nvdUScpe:2.3:o:fortinet:fortiswitch:*:*:*:*:*:*:*:*

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2021-06-01modified 2026-06-17

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references (6)

External citations — patches, advisories, analysis.

scry

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