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CVE-2017-7739

22
FAUCET Score

CVE-2017-7739 describes a reflected Cross-site Scripting (XSS) vulnerability in Fortinet FortiOS versions 5.6.0, 5.4.0-5.4.5, and 5.2.0-5.2.11. An unauthenticated attacker can exploit this by sending a crafted URL to a victim, allowing arbitrary web script or HTML injection in their browser. With a CVSS score of 6.1 (Medium), this vulnerability has a low attack complexity and requires user interaction, potentially leading to limited impact on confidentiality and integrity. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
5.2.0CPE matchmatch criteria
cpe:2.3:o:fortinet:fortios:5.2.0:*:*:*:*:*:*:*
5.2.1CPE matchmatch criteria
cpe:2.3:o:fortinet:fortios:5.2.1:*:*:*:*:*:*:*
5.2.2CPE matchmatch criteria
cpe:2.3:o:fortinet:fortios:5.2.2:*:*:*:*:*:*:*
5.2.3CPE matchmatch criteria
cpe:2.3:o:fortinet:fortios:5.2.3:*:*:*:*:*:*:*
5.2.4CPE matchmatch criteria
cpe:2.3:o:fortinet:fortios:5.2.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.1MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.08%
Probability of exploitation in next 30 days
EPSS Percentile
61.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0108 is in the 74th percentile among its peer group of 26,221 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

No media coverage found for this CVE.

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

fortiguard.com / advisory/FG-IR-17-168
Issue TrackingVendor Advisory
securityfocus.com / bid/101679
Third Party AdvisoryVDB Entry
securitytracker.com / id/1039741
Third Party AdvisoryVDB Entry