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CVE-2021-33577

MEDIUMCVSS 5.3/10EPSS 0.58%

Last modified

CVE-2021-33577 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. An issue was discovered in Cleo LexiCom 5.5.0.0. The requirement for the sender of an AS2 message to identify themselves (via encryption and signing of the message) can be bypassed by changing the Content-Type of the message to text/plain.. EPSS estimates a 0.58% chance of exploitation in the next 30 days.

Description

An issue was discovered in Cleo LexiCom 5.5.0.0. The requirement for the sender of an AS2 message to identify themselves (via encryption and signing of the message) can be bypassed by changing the Content-Type of the message to text/plain.

Metrics

CVSS 3.1
5.3/10

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

EPSS Probability
0.58%

43.5th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersions
CleoLexicom5.5.0.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-33577?
An issue was discovered in Cleo LexiCom 5.5.0.0. The requirement for the sender of an AS2 message to identify themselves (via encryption and signing of the message) can be bypassed by changing the Content-Type of the message to text/plain.
How severe is CVE-2021-33577?
CVE-2021-33577 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.58% probability of exploitation in the next 30 days.
How do I fix CVE-2021-33577?
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-2021-33577?

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

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Source: NVD / NIST