CVE-2007-3351: The SJPhone SIP soft phone 1.60.303c, when installed on the Dell Axim X3 running Windows Mobile 2003, allows r

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HIGH 7.8DOWNGRADE

CVE-2007-3351 is a high-severity flaw (CVSS 7.8) affecting sjphone. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The SJPhone SIP soft phone 1.60.303c, when installed on the Dell Axim X3 running Windows Mobile 2003, allows remote attackers to cause a denial of service (device hang and traffic amplification) via a direct crafted INVITE transaction, which causes the phone to transmit many RTP packets.

Why this priority

High severity

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

Risk facts

CVSS score	7.8 (High)
EPSS exploit chance	1.6% (top 24%)
CISA exploited list	No
Published	2007-06-22
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: sj labs

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2007-06-22 18:30 UTCPublished CVE record published
2026-06-16 22:41 UTCUpdated Record last modified

sj labs sjphone DOWNGRADE

Affected: 1.60.303c

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.60.303c

1. Check installed version

apt-cache policy sjphone || rpm -q sjphone || sjphone --version

2. No fixed release: DOWNGRADE to a release before 1.60.303c (Debian / Ubuntu)

apt-cache madison sjphone sudo apt install sjphone=<VERSION_BEFORE_1.60.303c> sudo apt-mark hold sjphone

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

dnf --showduplicates list sjphone sudo dnf downgrade sjphone-<VERSION_BEFORE_1.60.303c> sudo dnf versionlock add sjphone

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-2007-3351?

sjphone: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2007-3351 being exploited?

CVE-2007-3351 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-2007-3351 affect?

CVE-2007-3351 affects sjphone. Severity is high (CVSS 7.8). The SJPhone SIP soft phone 1.60.303c, when installed on the Dell Axim X3 running Windows Mobile 2003, allows remote attackers to cause a denial of service (device hang and traffic amplification) via a direct crafted INVITE transaction, whic

How urgent is CVE-2007-3351?

Priority 46/100. High severity

Software pages

Windows vulnerabilities · Dell vulnerabilities

Related CVEs

CVE-2007-3445 MEDIUM 4.3 DOWNGRADE Buffer overflow in SJ Labs SJphone 1.60.303c, running under Windows Mobile 2003 on the Samsung SCH-i730 phone,

References

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