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CVE-2020-15938

HIGHCVSS 7.5/10EPSS 0.75%

Last modified

CVE-2020-15938 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. When traffic other than HTTP/S (eg: SSH traffic, etc...) traverses the FortiGate in version below 6.2.5 and below 6.4.2 on port 80/443, it is not redirected to the transparent proxy policy for processing, as it doesn't have a valid HTTP header.. EPSS estimates a 0.75% chance of exploitation in the next 30 days.

Description

When traffic other than HTTP/S (eg: SSH traffic, etc...) traverses the FortiGate in version below 6.2.5 and below 6.4.2 on port 80/443, it is not redirected to the transparent proxy policy for processing, as it doesn't have a valid HTTP header.

Metrics

CVSS 3.1
7.5/10

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

EPSS Probability
0.75%

50.1th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersions
FortinetFortios<= 6.2.5
FortinetFortios>= 6.4.0, <= 6.4.2

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2020-15938?
When traffic other than HTTP/S (eg: SSH traffic, etc...) traverses the FortiGate in version below 6.2.5 and below 6.4.2 on port 80/443, it is not redirected to the transparent proxy policy for processing, as it doesn't have a valid HTTP header.
How severe is CVE-2020-15938?
CVE-2020-15938 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.75% probability of exploitation in the next 30 days.
How do I fix CVE-2020-15938?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-15938?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST