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© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2021-22129

26
FAUCET Score

CVE-2021-22129 describes a buffer overflow vulnerability in FortiMail versions prior to 6.4.5, affecting its Webmail and Administrative interfaces. An authenticated attacker can exploit this by sending specially crafted HTTP requests, potentially leading to unauthorized code execution. With a CVSS score of 8.8 (High), this vulnerability is easily exploitable over the network with low complexity and can result in high impact to confidentiality, integrity, and availability. Currently, there is no public exploit code available, it is not listed on the KEV catalog, and there is minimal community discussion or media coverage surrounding it.

Impacted Technologies

VendorProductVersion(s)CPE
<= 5.4.12CPE matchmatch criteria
cpe:2.3:a:fortinet:fortimail:*:*:*:*:*:*:*:*
>= 5.6.1, < 6.0.11CPE matchmatch criteria
cpe:2.3:a:fortinet:fortimail:*:*:*:*:*:*:*:*
>= 6.2.0, < 6.2.7CPE matchmatch criteria
cpe:2.3:a:fortinet:fortimail:*:*:*:*:*:*:*:*
>= 6.4.0, < 6.4.5CPE matchmatch criteria
cpe:2.3:a:fortinet:fortimail:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.09%
Probability of exploitation in next 30 days
EPSS Percentile
62.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0109 is in the 58th percentile among its peer group of 17,844 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

fortinetvendor investigatingvia nvd_reference
View patch

References

fortiguard.com / advisory/FG-IR-21-023
Vendor Advisory