Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2018-13383

76
FAUCET Score

CVE-2018-13383 is a heap buffer overflow vulnerability in the SSL VPN web portal of Fortinet FortiOS and FortiProxy, impacting several versions. This medium-severity vulnerability (CVSS 6.5) can be exploited remotely with low complexity, requiring user interaction, and primarily leads to denial of service for logged-in users. Despite the lack of public exploit code, this CVE is actively exploited, including in known ransomware campaigns, and has garnered significant community and media attention.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.2.9CPE matchmatch criteria
cpe:2.3:a:fortinet:fortiproxy:*:*:*:*:*:*:*:*
2.0.0CPE matchmatch criteria
cpe:2.3:a:fortinet:fortiproxy:2.0.0:*:*:*:*:*:*:*
>= 5.2.0, < 5.2.15CPE matchmatch criteria
cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*
>= 5.4.0, < 5.4.13CPE matchmatch criteria
cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*
>= 5.6.0, < 5.6.11CPE matchmatch criteria
cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
2.8
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
33.65%
Probability of exploitation in next 30 days
EPSS Percentile
98.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
Added to KEV · Jan 10, 2022
This CVE's current EPSS score of 0.3365 is in the 99th percentile among its peer group of 26,236 CVEs.

Social Chatter

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

Media Mentions

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

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
fortiguard.com / advisory/FG-IR-18-388
MitigationVendor Advisory
fortiguard.com / advisory/FG-IR-20-229
Vendor Advisory