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% (72nd 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% (72nd 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% (72nd 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…
CVE-2012-4742 — High (CVSS 7.5): The web_node_register function in web.pm in PacketFence before 3.0.2 might allow remote attackers to execute arbitrary…
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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Other CWE-287 (Improper Authentication) vulnerabilities

CVE-2026-45480 — Critical (CVSS 10.0): Improper authentication in Azure Active Directory allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-46389 — Critical (CVSS 10.0): UDS Identity Config builds the Keycloak configuration image (realm, plugins, theme, truststore, JARs) consumed by UDS…
CVE-2026-10611 — Critical (CVSS 10.0): An authentication bypass vulnerability exists in MISP when LDAP mixed authentication is enabled with OTP enforcement.…
CVE-2026-47280 — Critical (CVSS 10.0): Improper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over a…
CVE-2026-42822 — Critical (CVSS 10.0): Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges…
CVE-2026-20182 — Critical (CVSS 10.0): May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and…

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