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CVE-2022-35843

31
FAUCET Score

CVE-2022-35843 is a critical authentication bypass vulnerability affecting FortiOS (versions 7.2.0, 7.0.0-7.0.7, 6.4.0-6.4.9, and all 6.2/6.0 versions) and FortiProxy (versions 7.0.0-7.0.5, 2.0.0-2.0.10, and all 1.2.0 versions). This flaw allows a remote, unauthenticated attacker to gain full access to affected devices by sending a specially crafted Access-Challenge response from a Radius server. With a CVSS score of 9.8 (Critical), it presents a severe risk of complete compromise (Confidentiality, Integrity, Availability). While not currently listed in CISA's KEV catalog and lacking public exploit code, the vulnerability has garnered some community discussion and media coverage, indicating awareness within the cybersecurity community.

Impacted Technologies

VendorProductVersion(s)CPE
>= 1.2.0, <= 1.2.13CPE matchmatch criteria
cpe:2.3:a:fortinet:fortiproxy:*:*:*:*:*:*:*:*
>= 2.0.0, <= 2.0.10CPE matchmatch criteria
cpe:2.3:a:fortinet:fortiproxy:*:*:*:*:*:*:*:*
>= 7.0.0, <= 7.0.6CPE matchmatch criteria
cpe:2.3:a:fortinet:fortiproxy:*:*:*:*:*:*:*:*
>= 6.0.0, <= 6.0.15CPE matchmatch criteria
cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*
>= 6.2.0, <= 6.2.12CPE matchmatch criteria
cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.1HIGH

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.89%
Probability of exploitation in next 30 days
EPSS Percentile
55.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0089 is in the 40th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

fortinetpatch availablevia nvd_reference
View patch

References

fortiguard.com / psirt/FG-IR-22-255
PatchVendor Advisory