Vendor
2 published CVES affecting nowsms, from public sources (CVE.org, NVD, CISA KEV, FIRST EPSS, OSV).
Newest publication first
The Multimedia Messaging Centre (MMSC) in NowSMS Now SMS & MMS Gateway before 2013.11.15 allows remote attackers to cause a denial of service via a malformed MM1 message that is routed to a (1) MM4 or (2) MM7 connection.
The Multimedia Messaging Centre (MMSC) in NowSMS Now SMS & MMS Gateway 2013.09.26 allows remote attackers to cause a denial of service via a malformed message to a MM4 connection.
Sources: CVE.org, NVD, CISA KEV, FIRST EPSS, OSV and public exploit-reference metadata. Product matching comes from the published CVE records. A proof-of-concept means public code exists; it is not evidence of exploitation.