Vulnerability in Fortinet Fortios
CVE-2021-43074
An improper verification of cryptographic signature vulnerability [CWE-347] in FortiWeb 6.4 all versions, 6.3.16 and below, 6.2 all versions, 6.1 all versions, 6.0 all versions; FortiOS 7.0.3 and below, 6.4.8 and below, 6.2 all versions, 6.0 all versions; FortiSwitch 7.0.3 and below, 6.4.10 and below, 6.2 all versions, 6.0 all versions; FortiProxy 7.0.1 and below, 2.0.7 and below, 1.2 all versions, 1.1 all versions, 1.0 all versions may allow an attacker to decrypt portions of the administrative session management cookie if able to intercept the latter.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.003 (19.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 19.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Fortinet Fortios — versions 7.0.0, 6.4.0, 6.2.0
- Fortinet Fortiproxy — versions 7.0.0, 2.0.0, 1.2.0
- Fortinet Fortiswitch — versions 7.0.0, 6.4.0, 6.2.0
- Fortinet Fortiweb — versions 6.4.0, 6.3.0, 6.2.0
Weakness classification (CWE)
References
- fortiguard.com/psirt/FG-IR-21-126 (Vendor Advisory)
Frequently asked questions
- What is CVE-2021-43074?
- CVE-2021-43074 is a medium-severity vulnerability in Fortinet Fortios, classified under Improper Verification of Cryptographic Signature. CVSS score: 4.3/10. Published 2023-02-16.
- How severe is CVE-2021-43074?
- Medium severity. CVSS v3 base score is 4.3 out of 10.