CVE-2015-2066: SQL injection vulnerability in DLGuard 4.5 allows remote attackers to execute arbitrary SQL commands via the c

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HIGH 7.5DOWNGRADE

CVE-2015-2066 is a high-severity flaw (CVSS 7.5) affecting dlguard. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

SQL injection vulnerability in DLGuard 4.5 allows remote attackers to execute arbitrary SQL commands via the c parameter to index.php.

Why this priority

High severity

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	1.3% (top 31%)
CISA exploited list	No
Weakness	CWE-89
Published	2015-02-24
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

2015-02-24 17:59 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-2015-2066?

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

Is CVE-2015-2066 being exploited?

CVE-2015-2066 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-2015-2066 affect?

CVE-2015-2066 affects dlguard. Severity is high (CVSS 7.5). SQL injection vulnerability in DLGuard 4.5 allows remote attackers to execute arbitrary SQL commands via the c parameter to index.php.

How urgent is CVE-2015-2066?

Priority 44/100. High severity

Software pages

PHP vulnerabilities

Related CVEs

CVE-2015-2209 MEDIUM 5.0 DOWNGRADE DLGuard 4.5 allows remote attackers to obtain the installation path via the c parameter to index.php.
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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