CVE-2020-15936

mediumpriority · track · 18EPSS 0.007 · 51 %ileEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.65% (51st) EPSS

CVSS 4 · medium

Is it mine?

8 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-24

A improper input validation in Fortinet FortiGate version 6.4.3 and below, version 6.2.5 and below, version 6.0.11 and below, version 5.6.13 and below allows attacker to disclose sensitive information via SNI Client Hello TLS packets.

cvss

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

4.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 2.6–4.5

v2.04mediumAV:N/AC:L/Au:S/C:P/I:N/A:Nprimary · NVD / NIST USexploitability 8 · impact 2.9

v3.14.5mediumCVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:Nprimary · NVD / NIST USexploitability 0.9 · impact 3.6

v3.13.5lowAV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:Nsecondary · FSTEC (BDU) RU

v3.12.6lowCVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:N/E:X/RL:X/RC:Xsecondary · ENISA EU

v3.12.6lowCVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:Nsecondary · psirt@fortinet.comexploitability 1 · impact 1.4

v3.14.1mediumCVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N/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-20USprimaryCWE-200US

affected products (8)

Products and version ranges known to be affected.

Fortinet Fortinet FortiOS≤ FortiOS 6.4.3, 6.4.2, 6.4.1, 6.4.0, 6.2.5, 6.2.4, 6.2.3, 6.2.2, 6.2.1, 6.2.0, 6.0.11, 6.0.10, 6.0.9, 6.0.8, 6.0.7, 6.0.6, 6.0.5, 6.0.4, 6.0.3, 6.0.2, 6.0.1, 6.0.0, 5.6.13, 5.6.12, 5.6.11, 5.6.10, 5.6.9, 5.6.8, 5.6.7, 5.6.6, 5.6.5, 5.6.4, 5.6.3, 5.6.2, 5.6.1, 5.6.0enisa_euvdEU
Fortinet Inc. FortiOS≤ 6.0.11fstec_bduRU
Fortinet Inc. FortiOS6.2.0 → 6.2.5fstec_bduRU
Fortinet Inc. FortiOS6.4.0 → 6.4.3fstec_bduRU
fortinet fortios5.6.0 → 5.6.13nvdUScpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*
fortinet fortios6.0.0 → 6.0.11nvdUScpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*
fortinet fortios6.2.0 → 6.2.5nvdUScpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*
fortinet fortios6.4.0 → 6.4.3nvdUScpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*

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 2022-03-01modified 2026-06-17

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+25136 more

references (7)

External citations — patches, advisories, analysis.

scry

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