CVE-2011-4069: html/admin/login.php in PacketFence before 3.0.2 allows remote attackers to conduct LDAP injection attacks and

Q: How do I fix CVE-2011-4069?

packetfence: upgrade to newer than 3.0.1. Exact commands for each OS are on this page.

Q: Is CVE-2011-4069 being exploited?

CVE-2011-4069 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2011-4069 affect?

CVE-2011-4069 affects packetfence. Severity is critical (CVSS 9.8). html/admin/login.php in PacketFence before 3.0.2 allows remote attackers to conduct LDAP injection attacks and consequently bypass authentication via a crafted username.

Q: How urgent is CVE-2011-4069?

Priority 58/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.8REMOTEUPGRADE

CVE-2011-4069 is a critical-severity flaw (CVSS 9.8) affecting packetfence. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

html/admin/login.php in PacketFence before 3.0.2 allows remote attackers to conduct LDAP injection attacks and consequently bypass authentication via a crafted username.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.6% (top 25%)
CISA exploited list	No
Weakness	CWE-90
Published	2018-02-01
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: packetfence

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

Am I affected?

Timeline

2018-02-01 17:29 UTCPublished CVE record published
2026-06-16 23:34 UTCUpdated Record last modified

packetfence packetfence UPGRADE

Affected: <= 3.0.1

Fixed in: newer than 3.0.1

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 3.0.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade packetfence

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade packetfence

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2011-4069?

packetfence: upgrade to newer than 3.0.1. Exact commands for each OS are on this page.

Is CVE-2011-4069 being exploited?

CVE-2011-4069 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-2011-4069 affect?

CVE-2011-4069 affects packetfence. Severity is critical (CVSS 9.8). html/admin/login.php in PacketFence before 3.0.2 allows remote attackers to conduct LDAP injection attacks and consequently bypass authentication via a crafted username.

How urgent is CVE-2011-4069?

Priority 58/100. Critical severity; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

Related CVEs

CVE-2011-4068 CRITICAL 9.8 UPGRADE The check_password function in html/admin/login.php in PacketFence before 3.0.2 allows remote attackers to byp

References

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