CVE-2015-2209: DLGuard 4.5 allows remote attackers to obtain the installation path via the c parameter to index.php.

Routine

MEDIUM 5.0DOWNGRADE

CVE-2015-2209 is a medium-severity flaw (CVSS 5.0) affecting dlguard. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

DLGuard 4.5 allows remote attackers to obtain the installation path via the c parameter to index.php.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	1.4% (top 28%)
CISA exploited list	No
Weakness	CWE-200
Published	2015-03-04
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: dlguard

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

Am I affected?

Timeline

2015-03-04 20:59 UTCPublished CVE record published
2026-06-17 00:23 UTCUpdated Record last modified

dlguard dlguard DOWNGRADE

Affected: 4.5

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.5

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 4.5 (Debian / Ubuntu)

apt-cache madison dlguard sudo apt install dlguard=<VERSION_BEFORE_4.5> sudo apt-mark hold dlguard

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

dnf --showduplicates list dlguard sudo dnf downgrade dlguard-<VERSION_BEFORE_4.5> sudo dnf versionlock add dlguard

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-2015-2209?

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

Is CVE-2015-2209 being exploited?

CVE-2015-2209 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-2015-2209 affect?

CVE-2015-2209 affects dlguard. Severity is medium (CVSS 5.0). DLGuard 4.5 allows remote attackers to obtain the installation path via the c parameter to index.php.

How urgent is CVE-2015-2209?

Priority 35/100. No elevated risk signals yet.

Software pages

PHP vulnerabilities

Related CVEs

CVE-2015-2066 HIGH 7.5 DOWNGRADE SQL injection vulnerability in DLGuard 4.5 allows remote attackers to execute arbitrary SQL commands via the c
CVE-2015-2064 MEDIUM 4.3 DOWNGRADE Multiple cross-site scripting (XSS) vulnerabilities in DLGuard 5, 4.6, and 4.5 allow remote attackers to injec
CVE-2011-5115 MEDIUM 4.3 UPGRADE Cross-site scripting (XSS) vulnerability in DLGuard, possibly 4.6 and earlier, allows remote attackers to inje

References

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