CVE-2021-22129

mediumpriority · track · 35EPSS 0.011 · 65 %ileEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.09% (65th) EPSS

CVSS 6.5 · medium

Is it mine?

9 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-27

Multiple instances of incorrect calculation of buffer size in the Webmail and Administrative interface of FortiMail before 6.4.5 may allow an authenticated attacker with regular webmail access to trigger a buffer overflow and to possibly execute unauthorized code or commands via specifically crafted HTTP requests.

cvss

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

8.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.5–8.8

v2.06.5mediumAV:N/AC:L/Au:S/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 8 · impact 6.4

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 5.9

v3.18.8highAV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · psirt@fortinet.comexploitability 2.8 · impact 5.9

v3.18.1highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

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

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-120USprimaryCWE-120US

affected products (9)

Products and version ranges known to be affected.

Fortinet Fortinet FortiMail≤ FortiMail before 6.4.5enisa_euvdEU
Fortinet Inc. FortiMail≤ 5.4.12fstec_bduRU
Fortinet Inc. FortiMail6.0.0 → 6.0.10fstec_bduRU
Fortinet Inc. FortiMail6.2.0 → 6.2.6fstec_bduRU
Fortinet Inc. FortiMail6.4.0 → 6.4.4fstec_bduRU
fortinet fortimail≤ 5.4.12nvdUScpe:2.3:a:fortinet:fortimail:*:*:*:*:*:*:*:*
fortinet fortimail5.6.1 → 6.0.11nvdUScpe:2.3:a:fortinet:fortimail:*:*:*:*:*:*:*:*
fortinet fortimail6.2.0 → 6.2.7nvdUScpe:2.3:a:fortinet:fortimail:*:*:*:*:*:*:*:*
fortinet fortimail6.4.0 → 6.4.5nvdUScpe:2.3:a:fortinet:fortimail:*:*:*:*:*:*:*:*

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 2021-07-09modified 2026-06-17

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+5663 more

references (6)

External citations — patches, advisories, analysis.

scry

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