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CVE-2023-40720

22
FAUCET Score

CVE-2023-40720 is an authorization bypass vulnerability (CWE-639) affecting FortiVoiceEnterprise versions 7.0.0 through 7.0.1 and before 6.4.8. This flaw allows an authenticated attacker to read the SIP configuration of other users through specially crafted HTTP or HTTPS requests. With a CVSS score of 7.1 (HIGH), the vulnerability has a low attack complexity and requires low privileges, potentially leading to high confidentiality impact. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 6.0.0, <= 6.0.12CPE matchmatch criteria
cpe:2.3:a:fortinet:fortivoice:*:*:*:*:*:*:*:*
>= 6.4.0, <= 6.4.8CPE matchmatch criteria
cpe:2.3:a:fortinet:fortivoice:*:*:*:*:*:*:*:*
7.0.0CPE matchmatch criteria
cpe:2.3:a:fortinet:fortivoice:7.0.0:*:*:*:*:*:*:*
7.0.1CPE matchmatch criteria
cpe:2.3:a:fortinet:fortivoice:7.0.1:*:*:*:*:*:*:*
>= 7.0.0, <= 7.0.1CPE match
cpe:2.3:a:fortinet:fortivoice:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.1HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
2.8
Impact Score
4.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.85%
Probability of exploitation in next 30 days
EPSS Percentile
54.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0085 is in the 49th percentile among its peer group of 17,844 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 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 / psirt/FG-IR-23-282
Vendor Advisory