Vulnerability in Cleo Lexicom
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.006 (46.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 46.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Cleo Lexicom — versions 5.5.0.0
References
- github.com/atredispartners/advisories/blob/master/ATREDIS-2020-0011.md (Exploit, Third Party Advisory)
- www.cleo.com/cleo-lexicom (Product)
Frequently asked questions
- What is CVE-2021-33577?
- CVE-2021-33577 is a medium-severity vulnerability in Cleo Lexicom. CVSS score: 5.3/10. Published 2021-06-18.
- How severe is CVE-2021-33577?
- Medium severity. CVSS v3 base score is 5.3 out of 10.