How severe is CVE-2011-4068?

CVE-2011-4068 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2011-4068 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-4068?

CVE-2011-4068 affects Packetfence. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2011-4068?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2011-4068 published?

CVE-2011-4068 was published on 2018-02-01 and last updated on 2026-06-16.

CVE-2011-4068

CVE-2011-4068 is a critical-severity vulnerability in Packetfence with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Packetfence
Published: 2018-02-01
Last modified: 2026-06-16

Description

The check_password function in html/admin/login.php in PacketFence before 3.0.2 allows remote attackers to bypass authentication via an empty password.

Frequently asked questions

What is CVE-2011-4068?: The check_password function in html/admin/login.php in PacketFence before 3.0.2 allows remote attackers to bypass authentication via an empty password.
How severe is CVE-2011-4068?: CVE-2011-4068 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2011-4068 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-4068?: CVE-2011-4068 affects Packetfence. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2011-4068?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2011-4068 published?: CVE-2011-4068 was published on 2018-02-01 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:packetfence:packetfence:*:*:*:*:*:*:*:*

More vulnerabilities in Packetfence

CVE-2011-4069 — Critical (CVSS 9.8): html/admin/login.php in PacketFence before 3.0.2 allows remote attackers to conduct LDAP injection attacks and…
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CVE-2012-4741 — Medium (CVSS 5.0): The RADIUS extension in PacketFence before 3.3.0 uses a different user name than is used for authentication for users…
CVE-2012-4740 — Medium (CVSS 4.3): Cross-site scripting (XSS) vulnerability in the captive portal in PacketFence before 3.3.0 allows remote attackers to…

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