CVE-2021-36193

At a glance

Severity: MEDIUM 6.3
EPSS: EPSS 0.82 % · percentile 57 (2026-10-27)
State: PUBLISHED
Published: 2022-02-02
Updated: 2026-01-13
Assigner: fortinet
NVD status: Modified

Description

Multiple stack-based buffer overflows in the command line interpreter of FortiWeb before 6.4.2 may allow an authenticated attacker to achieve arbitrary code execution via specially crafted commands.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	MEDIUM 6.3	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:U/RC:C	fortinet
CVSS 3.1	MEDIUM 6.7	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H	NVD · psirt@fortinet.com (Secondary)
CVSS 3.1	HIGH 7.2	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H	NVD · nvd@nist.gov (Primary)
CVSS 2.0	MEDIUM 6.5	AV:N/AC:L/Au:S/C:P/I:P/A:P	NVD · nvd@nist.gov (Primary)

Weaknesses (CWE)

European references

ENISA EUVD · EUVD-2021-22814
GCVE · GCVE-0-2021-36193

CERT-FR advisories

CERTFR-2022-AVI-104 — Multiples vulnérabilités dans les produits Fortinet · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:a:fortinet:fortiweb:*:*:*:*:*:*:*:* ≥ 5.0.0 < 6.2.6
cpe:2.3:a:fortinet:fortiweb:*:*:*:*:*:*:*:* ≥ 6.3.0 < 6.3.16
cpe:2.3:a:fortinet:fortiweb:*:*:*:*:*:*:*:* ≥ 6.4.0 < 6.4.2

Affected products

Product	Versions
Fortinet · FortiFone	affected 3.0.0 ≤ 3.0.11
Fortinet · FortiADC	affected 7.0.0 ; affected 6.2.0 ≤ 6.2.2 ; affected 6.1.0 ≤ 6.1.6 ; affected 6.0.0 ≤ 6.0.4 ; affected 5.4.0 ≤ 5.4.5 ; affected 5.3.0 ≤ 5.3.7
Fortinet · FortiMail	affected 7.0.0 ≤ 7.0.2 ; affected 6.4.0 ≤ 6.4.6 ; affected 6.2.0 ≤ 6.2.8 ; affected 6.0.0 ≤ 6.0.12 ; affected 5.4.0 ≤ 5.4.12
Fortinet · FortiDDoS	affected 5.7.0 ; affected 5.6.0 ≤ 5.6.1 ; affected 5.5.0 ≤ 5.5.1 ; affected 5.4.0 ≤ 5.4.3 ; affected 5.3.0 ≤ 5.3.2 ; affected 5.2.0
Fortinet · FortiDDoS-F	affected 6.3.0 ; affected 6.2.0 ≤ 6.2.2 ; affected 6.1.0 ≤ 6.1.4
Fortinet · FortiVoice	affected 6.4.0 ≤ 6.4.4 ; affected 6.0.0 ≤ 6.0.10
Fortinet · FortiDDoS-CM	affected 5.5.0 ≤ 5.5.1 ; affected 5.4.0 ≤ 5.4.3 ; affected 5.3.0 ≤ 5.3.1 ; affected 5.2.0 ; affected 5.1.0 ; affected 5.0.0
Fortinet · FortiWeb	affected 6.4.0 ≤ 6.4.1 ; affected 6.3.0 ≤ 6.3.15
Fortinet · FortiRecorder	affected 6.4.0 ≤ 6.4.2 ; affected 6.0.0 ≤ 6.0.10 ; affected 2.7.0 ≤ 2.7.7 ; affected 2.6.0 ≤ 2.6.3
Fortinet · FortiNDR	affected 1.5.0 ≤ 1.5.3 ; affected 1.4.0 ; affected 1.3.0 ≤ 1.3.1 ; affected 1.2.0 ; affected 1.1.0

References

https://fortiguard.com/advisory/FG-IR-21-132

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD