CVE-2015-1515: The dwall.sys driver in SoftSphere DefenseWall Personal Firewall 3.24 allows local users to write data to arbi

This month

HIGH 7.2DOWNGRADE

CVE-2015-1515 is a high-severity flaw (CVSS 7.2) affecting defensewall personal firewall. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The dwall.sys driver in SoftSphere DefenseWall Personal Firewall 3.24 allows local users to write data to arbitrary memory locations, and consequently gain privileges, via a crafted 0x00222000, 0x00222004, 0x00222008, 0x0022200c, or 0x00222010 IOCTL call.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	7.2 (High)
EPSS exploit chance	1.0% (top 36%)
CISA exploited list	No
Weakness	CWE-264
Published	2015-02-19
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: softsphere

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

Am I affected?

Timeline

2015-02-19 15:59 UTCPublished CVE record published
2026-06-17 00:22 UTCUpdated Record last modified

softsphere defensewall personal firewall DOWNGRADE

Affected: 3.24

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.24

1. Check installed version

apt-cache policy defensewall-personal-firewall || rpm -q defensewall-personal-firewall || defensewall-personal-firewall --version

2. No fixed release: DOWNGRADE to a release before 3.24 (Debian / Ubuntu)

apt-cache madison defensewall-personal-firewall sudo apt install defensewall-personal-firewall=<VERSION_BEFORE_3.24> sudo apt-mark hold defensewall-personal-firewall

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

dnf --showduplicates list defensewall-personal-firewall sudo dnf downgrade defensewall-personal-firewall-<VERSION_BEFORE_3.24> sudo dnf versionlock add defensewall-personal-firewall

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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: SoftSphere DefenseWall FW/IPS 3.24 - Local Privilege Escalation

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-2015-1515?

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

Is CVE-2015-1515 being exploited?

CVE-2015-1515 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-2015-1515 affect?

CVE-2015-1515 affects defensewall personal firewall. Severity is high (CVSS 7.2). The dwall.sys driver in SoftSphere DefenseWall Personal Firewall 3.24 allows local users to write data to arbitrary memory locations, and consequently gain privileges, via a crafted 0x00222000, 0x00222004, 0x00222008, 0x0022200c, or 0x00222

How urgent is CVE-2015-1515?

Priority 46/100. High severity; Public exploit reference

Related CVEs

CVE-2010-5158 MEDIUM 6.2 DOWNGRADE Race condition in DefenseWall Personal Firewall 3.00 on Windows XP allows local users to bypass kernel-mode ho

References

← Back to latest CVEs