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CVE-2026-39811

Published: Apr 14, 2026Updated: Apr 21, 2026 Sources: CVE List NVD BDUCWE-190
NVD MITRE
4.9CVSSMEDIUM
EPSS Score
0.4%
Top 71.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

A integer overflow or wraparound vulnerability in Fortinet FortiWeb 8.0.0 through 8.0.3, FortiWeb 7.6.0 through 7.6.6, FortiWeb 7.4 all versions, FortiWeb 7.2 all versions, FortiWeb 7.0 all versions may allow attacker to denial of service via <insert attack vector here>

CVSS Vector Breakdown

AV:NAC:LPR:HUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:HPrivileges Required
High
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-190

Affected Products

FortiWebFortinetSecurity Products
FortiWebFortinet Inc.Security Products
fortiwebfortinetSecurity Products
fortinetcommercialUSSecurity Productsaka forti net
fortinet inc.commercialUSNetworking Infrastructureaka fortinet

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Initial Access
View detailed technique mapping

References

https://fortiguard.fortinet.com/psirt/FG-IR-26-108
fortiguard.fortinet.com

Timeline

Published
Apr 14, 2026
Last Updated
Apr 21, 2026

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