CVE-2026-39813
📛 CVE Title
CVE-2026-39813
Description
A path traversal: '../filedir' vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.5, FortiSandbox 4.4.0 through 4.4.8 may allow attacker to escalation of privilege via <insert attack vector here>
Description (MITRE) cveawg.mitre.org
Pulled from cveawg.mitre.org/api/cve/CVE-2026-39813 on 2026-07-27. Shown when MITRE's text differs from the cvelistV5 mirror.
A path traversal: '../filedir' vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.5, FortiSandbox 4.4.0 through 4.4.8 may allow attacker to escalation of privilege via specially crafted HTTP requests.
Overview
- State
- PUBLISHED
- Assigner (CNA)
- fortinet
- CVSS severity
- CRITICAL
- CVSS score
- 9.1 / 10
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C- Effective score
- 9.1 / 10 CRITICAL source: CNA overview
- CWE(s)
-
CWE-24 - Reserved
- 2026-04-07
- Published
- 2026-04-14 15:38 UTC
- Last updated
- 2026-04-15 03:58 UTC
- Source
- https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/39xxx/CVE-2026-39813.json
- Linked Threat
- CVE-2026-39813 — CVE-2026-39813
NVD triage scoring NVD CVE 2.0
Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.
- NVD published
- 2026-04-14 16:16:45 UTC
- NVD last modified
- 2026-04-20 19:11:30 UTC
- NVD CVSS v3.1
- 9.8 / 10 CRITICAL source: psirt@fortinet.com
- NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H- Exploitability subscore
- 3.9 / 10
- Impact subscore
- 5.9 / 10
- EPSS score
- 0.0012 (probability of exploitation in next 30 days)
- EPSS percentile
- 30.40% vs all CVEs — higher = more likely to be exploited, as of 2026-05-24
NVD / KEV / EPSS data refreshed 2026-05-25 02:27 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.
European Union Vulnerability Database ENISA EUVD
ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.
- EUVD ID
-
EUVD-2026-22344 - Assigner
- fortinet
- Published
- Apr 14, 2026, 3:38:30 PM
- Updated
- Apr 15, 2026, 3:58:20 AM
- EUVD base score (CVSS 3.1)
-
9.1 / 10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C - EUVD-reported EPSS
- 0.1200
- Vendors
- Fortinet
- Products
-
FortiSandbox (5.0.0 ≤5.0.5)FortiSandbox (4.4.0 ≤4.4.8)FortiSandbox Cloud (23.4)FortiSandbox Cloud (24.1)FortiSandbox Cloud (5.0.4 ≤5.0.5)
ENISA description: A path traversal: '../filedir' vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.5, FortiSandbox 4.4.0 through 4.4.8 may allow attacker to escalation of privilege via <insert attack vector here>
EUVD references (1)
Affected products (2)
| Vendor | Product | Versions | Platforms |
|---|---|---|---|
| Fortinet | FortiSandbox |
5.0.0 (affected),
4.4.0 (affected)
|
— |
| Fortinet | FortiSandbox Cloud |
24.1 (affected),
23.4 (affected),
5.0.4 (affected)
|
— |
Affected products — CPE 2.3 (1) NVD
NVD's normalized CPE 2.3 matchers, used by vendor tools (vulnerability scanners, asset managers) for automated detection. Compare with the CNA's free-text "Affected products" section above.
cpe:2.3:a:fortinet:fortisandbox:*:*:*:*:*:*:*:*
Vendor references (1)
References embedded in the original CVE record by the assigning CNA.
MITRE references (1) cveawg.mitre.org
Pulled from MITRE's CVE Services API by the 🛰 Backfill from MITRE button.
Web references (0)
DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.
No web references attached yet.
NVD-tagged references (1)
Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.
- https://fortiguard.fortinet.com/psirt/FG-IR-26-112 psirt@fortinet.com Vendor Advisory
Remediations (10)
Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.
-
web:cyberscoop.com
Threats Microsoft addresses 137 vulnerabilities in May's Patch Tuesday, including 13 rated critical The high volume of vulnerabilities reflects a growing trend researchers have been anticipating as artificial intelligence models are deployed to find previously uncovered defects in code.
2026-05-22 19:16 UTC -
web:cybersecuritynews.com
Fortinet released a sweeping batch of security advisories on April 14, 2026 , addressing 11 vulnerabilities spanning multiple product lines, including two rated Critical, two rated High, and seven rated Medium or Low.
2026-05-22 19:16 UTC -
web:nvd.nist.gov
An official website of the United States government Here's how you know
2026-05-22 19:16 UTC -
web:portal.msrc.microsoft.com
The Security Update Guide provides information on the latest Microsoft security updates, helping users understand and address potential vulnerabilities effectively.
2026-05-22 19:16 UTC -
web:www.crowdstrike.com
Microsoft's March 2026 Patch Tuesday addresses 82 CVEs , featuring eight Critical vulnerabilities.
2026-05-22 19:16 UTC -
web:www.helpnetsecurity.com
Two vulnerabilities ( CVE-2026-39813 , CVE - 2026 -39808) in FortiSandbox could be exploited by unauthenticated attackers via HTTP requests.
2026-05-22 19:16 UTC -
web:www.oracle.com
This Critical Patch Update contains 481 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at April 2026 Critical Patch Update: Executive Summary and Analysis.
2026-05-22 19:16 UTC -
web:www.rapid7.com
Microsoft is publishing 77 vulnerabilities this Patch Tuesday, including two publicly disclosed zero-day vulnerabilities.
2026-05-22 19:16 UTC -
web:www.sentinelone.com
CVE-2026-39813 is a path traversal vulnerability in Fortinet FortiSandbox. Learn about its impact, affected versions, and mitigation methods.
2026-05-22 19:16 UTC -
web:zecurit.com
Get the complete breakdown of Microsoft's May 2026 Patch Tuesday. We analyze the latest security updates and all critical CVEs .
2026-05-22 19:16 UTC
AI Forensic Analysis
Only Available for Registered Users. Sign in to view.
Raw JSON
The full cvelistV5 record. Download as CVE-2026-39813.json.
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