CVE-2026-39811

MITRE NVD CVE.ORG JSON API Print: PDF PDF

Summary

CVECVE-2026-39811
StatePUBLISHED
Assignerfortinet
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-14 16:16:45 UTC
Updated2026-04-21 17:16:24 UTC
DescriptionA 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>

Risk And Classification

Primary CVSS: v3.1 4.9 MEDIUM from [email protected]

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

EPSS: 0.001210000 probability, percentile 0.311030000 (date 2026-04-21)

Problem Types: CWE-190 | CWE-190 Denial of service

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary4.9MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
3.1CNACVSS4.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Fortinet Fortiweb All All All All
Application Fortinet Fortiweb All All All All
Application Fortinet Fortiweb All All All All
Application Fortinet Fortiweb All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Fortinet FortiWeb affected 8.0.0 8.0.3 semver Not specified
CNA Fortinet FortiWeb affected 7.6.0 7.6.6 semver Not specified
CNA Fortinet FortiWeb affected 7.4.0 7.4.12 semver Not specified
CNA Fortinet FortiWeb affected 7.2.0 7.2.12 semver Not specified
CNA Fortinet FortiWeb affected 7.0.0 7.0.12 semver Not specified

References

ReferenceSourceLinkTags
fortiguard.fortinet.com/psirt/FG-IR-26-108 [email protected] fortiguard.fortinet.com Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

Solutions

CNA: Upgrade to FortiWeb version 8.0.4 or above Upgrade to FortiWeb version 7.6.7 or above

© CVE.report 2026 |

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report