How severe is CVE-2011-0453?

CVE-2011-0453 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2011-0453 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-0453?

CVE-2011-0453 affects F-secure Internet Gatekeeper. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2011-0453?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2011-0453 published?

CVE-2011-0453 was published on 2011-02-18 and last updated on 2026-06-16.

CVE-2011-0453

CVE-2011-0453 is a medium-severity vulnerability in F-secure Internet Gatekeeper with a CVSS 2.0 base score of 5.0. 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: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: F-secure Internet Gatekeeper
Published: 2011-02-18
Last modified: 2026-06-16

Description

F-Secure Internet Gatekeeper for Linux 3.x before 3.03 does not require authentication for reading access logs, which allows remote attackers to obtain potentially sensitive information via a TCP session on the admin UI port.

Frequently asked questions

What is CVE-2011-0453?: F-Secure Internet Gatekeeper for Linux 3.x before 3.03 does not require authentication for reading access logs, which allows remote attackers to obtain potentially sensitive information via a TCP session on the admin UI port.
How severe is CVE-2011-0453?: CVE-2011-0453 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2011-0453 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-0453?: CVE-2011-0453 affects F-secure Internet Gatekeeper. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2011-0453?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-0453 published?: CVE-2011-0453 was published on 2011-02-18 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:f-secure:internet_gatekeeper:3.02.1221:*:linux:*:*:*:*:*

More vulnerabilities in F-secure Internet Gatekeeper

CVE-2007-2967 — Critical (CVSS 10.0): Multiple F-Secure anti-virus products for Microsoft Windows and Linux before 20070522 allow remote attackers to cause a…
CVE-2004-0234 — Critical (CVSS 10.0): Multiple stack-based buffer overflows in the get_header function in header.c for LHA 1.14, as used in products such as…
CVE-2007-3300 — Critical (CVSS 9.3): Multiple F-Secure anti-virus products for Microsoft Windows and Linux before 20070619 allow remote attackers to bypass…
CVE-2021-33601 — High (CVSS 7.6): A vulnerability was discovered in the web user interface of F-Secure Internet Gatekeeper. An authenticated user can…
CVE-2006-2838 — High (CVSS 7.6): Buffer overflow in the web console in F-Secure Anti-Virus for Microsoft Exchange 6.40, and Internet Gatekeeper 6.40…
CVE-2007-2966 — High (CVSS 7.5): Buffer overflow in the LHA decompression component in F-Secure anti-virus products for Microsoft Windows and Linux…

All CVEs affecting F-secure Internet Gatekeeper →

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…

Browse all CWE-287 (Improper Authentication) vulnerabilities →