CVE-2013-7000: The Multimedia Messaging Centre (MMSC) in NowSMS Now SMS & MMS Gateway 2013.09.26 allows remote attackers to c

Routine

MEDIUM 4.3DOWNGRADE

CVE-2013-7000 is a medium-severity flaw (CVSS 4.3) affecting now sms \& mms gateway. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	1.3% (top 29%)
CISA exploited list	No
Weakness	CWE-20
Published	2013-12-07
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: nowsms

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2013-12-07 21:55 UTCPublished CVE record published
2026-06-17 00:01 UTCUpdated Record last modified

nowsms now sms \& mms gateway DOWNGRADE

Affected: 2013.09.26

Fixed in: no fixed release known

Safe to downgrade to: a release before 2013.09.26

1. Check installed version

apt-cache policy now-sms--mms-gateway || rpm -q now-sms--mms-gateway || now-sms--mms-gateway --version

2. No fixed release: DOWNGRADE to a release before 2013.09.26 (Debian / Ubuntu)

apt-cache madison now-sms--mms-gateway sudo apt install now-sms--mms-gateway=<VERSION_BEFORE_2013.09.26> sudo apt-mark hold now-sms--mms-gateway

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list now-sms--mms-gateway sudo dnf downgrade now-sms--mms-gateway-<VERSION_BEFORE_2013.09.26> sudo dnf versionlock add now-sms--mms-gateway

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2013-7000?

now sms \& mms gateway: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2013-7000 being exploited?

CVE-2013-7000 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2013-7000 affect?

CVE-2013-7000 affects now sms \& mms gateway. Severity is medium (CVSS 4.3). 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.

How urgent is CVE-2013-7000?

Priority 33/100. No elevated risk signals yet.

Related CVEs

CVE-2013-7001 MEDIUM 4.3 UPGRADE The Multimedia Messaging Centre (MMSC) in NowSMS Now SMS & MMS Gateway before 2013.11.15 allows remote attacke

References

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