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© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2023-26209

20
FAUCET Score

CVE-2023-26209 is an improper restriction of excessive authentication attempts vulnerability (CWE-307) affecting Fortinet FortiDeceptor versions 3.1.x and earlier. A remote, unauthenticated attacker can exploit this by sending numerous HTTP requests to the login form, leading to partial exhaustion of CPU and memory resources. With a CVSS score of 5.3 (Medium), this vulnerability has a low impact on availability, requiring no user interaction and having low attack complexity. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage for this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 1.0.0, < 3.2.0CPE matchmatch criteria
cpe:2.3:a:fortinet:fortideceptor:*:*:*:*:*:*:*:*
>= 1.0.0, <= 1.0.1CPE match
cpe:2.3:a:fortinet:fortideceptor:*:*:*:*:*:*:*:*
>= 3.0.0, <= 3.0.2CPE match
cpe:2.3:a:fortinet:fortideceptor:*:*:*:*:*:*:*:*
>= 3.1.0, <= 3.1.1CPE match
cpe:2.3:a:fortinet:fortideceptor:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

3.7LOW

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
2.2
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.75%
Probability of exploitation in next 30 days
EPSS Percentile
75.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0175 is in the 62nd percentile among its peer group of 23,725 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 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 / psirt/FG-IR-20-078
Vendor Advisory