High severity8.8NVD Advisory· Published Oct 5, 2021· Updated Jun 17, 2026
CVE-2021-31988
CVE-2021-31988
Description
A user controlled parameter related to SMTP test functionality is not correctly validated making it possible to add the Carriage Return and Line Feed (CRLF) control characters and include arbitrary SMTP headers in the generated test email.
Affected products
2- Axis Communications AB/AXIS OSv5Range: AXIS OS 5.51 or later
Patches
Vulnerability mechanics
References
1- www.axis.com/files/tech_notes/CVE-2021-31988.pdfnvdVendor Advisory
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